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Clinical A-Z list

The clinical chapters provide concise guidance about dermatological conditions and their management. Where there is diagnostic uncertainty refer to the  diagnostic tables.

  • CLEAR
  • A
  • B
  • C
  • D
  • E
  • F
  • G
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  • Z

A

  • Acanthosis nigricans     (Last Updated: 10/03/2018)
  • Acne: acne conglobata     (Last Updated: 11/03/2018)
  • Acne: acne excoriee     (Last Updated: 11/03/2018)
  • Acne: acne fulminans     (Last Updated: 11/03/2018)
  • Acne: acne vulgaris     (Last Updated: 11/03/2018)
  • Acne: macrocomedones     (Last Updated: 11/03/2018)
  • Acne: prepubertal     (Last Updated: 23/11/2014)
  • Acne: sandpaper acne     (Last Updated: 11/03/2018)
  • Acne agminata syn. granulomatous rosacea; lupus miliaris disseminatus faciei     (Last Updated: 08/01/2018)
  • Acne keloidalis nuchae     (Last Updated: 11/03/2018)
  • Acquired (digital) fibrokeratoma     (Last Updated: 25/09/2013)
  • Acquired fibrous nodule     (Last Updated: 25/09/2013)
  • Acquired ichthyosis     (Last Updated: 20/11/2015)
  • Acral Peeling Skin syndrome     (Last Updated: 26/11/2015)
  • Acrocyanosis     (Last Updated: 11/03/2018)
  • Acrodermatitis enteropathica     (Last Updated: 17/11/2017)
  • Acrokeratosis verruciformis (of Hopf)     (Last Updated: 30/12/2015)
  • Acropustulosis of infancy     (Last Updated: 11/03/2018)
  • Actinic granuloma     (Last Updated: 17/09/2015)
  • Actinic keratosis (syn. solar keratosis)     (Last Updated: 17/11/2017)
  • Actinic prurigo     (Last Updated: 11/03/2018)
  • Acute generalized exanthematous pustulosis (AGEP)     (Last Updated: 18/01/2013)
  • Addison’s disease     (Last Updated: 28/11/2013)
  • Adverse cutaneous drug reactions     (Last Updated: 02/11/2014)
  • Albinism - oculocutaneous albinism     (Last Updated: 11/03/2018)
  • Allergy tests     (Last Updated: 19/09/2012)
  • Alopecia - an overview     (Last Updated: 12/03/2018)
  • Alopecia - male and female pattern     (Last Updated: 18/11/2017)
  • Alopecia areata     (Last Updated: 19/03/2018)
  • Amputation stump neuroma     (Last Updated: 22/08/2014)
  • Amyloidosis - cutaneous     (Last Updated: 19/03/2018)
  • Anagen effluvium     (Last Updated: 15/12/2013)
  • Anderson-Fabry disease     (Last Updated: 20/01/2013)
  • Anetoderma     (Last Updated: 23/03/2018)
  • Angioedema (without urticaria)     (Last Updated: 20/12/2016)
  • Angiofibromas     (Last Updated: 27/08/2013)
  • Angiokeratoma     (Last Updated: 23/03/2018)
  • Angioleiomyoma     (Last Updated: 24/04/2013)
  • Angiolipoma     (Last Updated: 30/05/2013)
  • Angiolymphoid hyperplasia with eosinophilia     (Last Updated: 25/03/2018)
  • Angioma (acquired) - including cherry angioma / Campbell de Morgan spots     (Last Updated: 31/10/2014)
  • Angioma serpiginosum     (Last Updated: 19/01/2013)
  • Angiosarcoma (syn. malignant haemangioendothelioma)     (Last Updated: 23/11/2014)
  • Angular cheilitis (syn. angular stomatitis)     (Last Updated: 25/03/2018)
  • Annular erythema     (Last Updated: 25/03/2018)
  • Anthrax     (Last Updated: 25/03/2018)
  • Antiphospholipid syndrome     (Last Updated: 14/05/2015)
  • Antisynthetase syndrome     (Last Updated: 15/05/2015)
  • Aphthous ulcers     (Last Updated: 05/08/2016)
  • Apocrine carcinoma     (Last Updated: 30/06/2013)
  • Apocrine hidrocystoma     (Last Updated: 30/06/2013)
  • Appendageal tumours     (Last Updated: 22/03/2018)
  • Aquagenic pruritus     (Last Updated: 18/01/2013)
  • Argyria     (Last Updated: 28/11/2013)
  • Ash-leaf spots     (Last Updated: 27/08/2013)
  • Aspergillus     (Last Updated: 22/07/2015)
  • Atrophic glossitis     (Last Updated: 05/08/2016)
  • Atrophoderma of Pasini and Pierini     (Last Updated: 04/04/2018)
  • Atrophoderma vermiculatam     (Last Updated: 02/03/2015)
  • Atypical (dysplastic) melanocytic naevus     (Last Updated: 19/11/2017)
  • Atypical fibroxanthoma     (Last Updated: 23/11/2014)
  • Autoantibodies     (Last Updated: 05/07/2016)
  • Autosomal recessive congenital ichthyosis     (Last Updated: 20/11/2015)

B

  • Bacillary angiomatosis     (Last Updated: 22/07/2015)
  • Balanitis     (Last Updated: 19/11/2017)
  • Bartholin’s cysts     (Last Updated: 15/08/2016)
  • Basal cell carcinoma - an overview     (Last Updated: 19/11/2017)
  • Basal cell carcinoma: morphoeic (infiltrative)     (Last Updated: 01/11/2014)
  • Basal cell carcinoma: multicomponent (syn. multifocal)     (Last Updated: 01/11/2014)
  • Basal cell carcinoma: solid (syn. nodular / cystic)     (Last Updated: 24/04/2017)
  • Basal cell carcinoma: superficial     (Last Updated: 01/11/2014)
  • Basex’s acrokeratosis paraneoplastica     (Last Updated: 19/08/2016)
  • Basosquamous carcinoma     (Last Updated: 09/02/2017)
  • Beau’s lines     (Last Updated: 02/05/2016)
  • Becker’s naevus     (Last Updated: 04/04/2018)
  • Bed bugs (Cimex lectularius)     (Last Updated: 24/08/2014)
  • Behçet syndrome     (Last Updated: 05/08/2016)
  • Benign melanoytic naevi (acquired and dermal naevi ie common moles)     (Last Updated: 19/11/2017)
  • Birt-Hogg-Dube syndrome     (Last Updated: 30/06/2013)
  • Black skin - clinical variations     (Last Updated: 05/10/2017)
  • Blaschko’s lines     (Last Updated: 27/01/2017)
  • Blistering (bullous) disorders - an overview     (Last Updated: 06/07/2016)
  • Blue naevus     (Last Updated: 23/11/2014)
  • Blue Rubber Bleb Naevus syndrome     (Last Updated: 01/11/2014)
  • Body dysmorphic disorder     (Last Updated: 18/08/2016)
  • Body lice (syn. pediculosis corporis)     (Last Updated: 23/11/2014)
  • Boils     (Last Updated: 06/07/2016)
  • Bowen’s disease     (Last Updated: 24/04/2017)
  • Bowenoid papulosis     (Last Updated: 12/08/2016)
  • Brachioradial pruritus     (Last Updated: 18/01/2013)
  • Brooke-Spiegler syndrome     (Last Updated: 30/06/2013)
  • Brown skin - clinical variations     (Last Updated: 05/10/2017)
  • Bullous pemphigoid     (Last Updated: 06/09/2015)

C

  • Cafe-au-lait patch     (Last Updated: 14/04/2013)
  • Calcification of the skin and subcutaneous tissues (syn. calcinosis cutis)     (Last Updated: 08/12/2016)
  • Calcinosis cutis     (Last Updated: 02/06/2016)
  • Calciphylaxis     (Last Updated: 21/12/2014)
  • Campbell de Morgan spots     (Last Updated: 19/01/2013)
  • Candidal infection (syn. candidiasis; candidosis; moniliasis)     (Last Updated: 15/08/2016)
  • Capillaritis     (Last Updated: 17/06/2015)
  • Carbuncles     (Last Updated: 03/11/2014)
  • Carcinoid syndrome     (Last Updated: 19/08/2016)
  • Carcinoma cuniculatum (syn. epithelioma cuniculatum, verrucous carcinoma)     (Last Updated: 18/04/2018)
  • Cellulitis, erysipelas, and necrotising fasciitis     (Last Updated: 19/11/2017)
  • Central centrifugal cicatricial alopecia     (Last Updated: 05/10/2017)
  • Chancroid     (Last Updated: 09/11/2015)
  • Chickenpox (syn. varicella)     (Last Updated: 23/02/2014)
  • Chikungunya     (Last Updated: 09/11/2015)
  • Chilblains     (Last Updated: 10/08/2015)
  • Child abuse and domestic violence - cutaneous features     (Last Updated: 18/08/2016)
  • Childhood granulomatous periorificial dermatitis (syn. facial Afro-Caribbean childhood eruption)     (Last Updated: 09/05/2016)
  • Chondrodermatitis nodularis helicis     (Last Updated: 08/11/2016)
  • Chronic actinic dermatitis     (Last Updated: 08/11/2016)
  • Chronic bullous disease of childhood     (Last Updated: 16/10/2014)
  • Chronic superficial scaly dermatitis syn. parapsoriasis; digitate dermatosis     (Last Updated: 24/04/2017)
  • Churg-Strauss syndrome (syn. allergic granulomatous angiitis)     (Last Updated: 27/06/2015)
  • Cicatricial alopecia     (Last Updated: 17/12/2013)
  • Clear cell acanthoma of Degos     (Last Updated: 23/11/2014)
  • Clubbing     (Last Updated: 02/05/2016)
  • Cockade naevus (syn. Naevus en cocarde)     (Last Updated: 27/12/2014)
  • Combined naevus     (Last Updated: 27/12/2014)
  • Comedo naevus (syn. comedone naevus; naevus comedonicus; follicular naevus)     (Last Updated: 16/04/2015)
  • Condylomata acuminata     (Last Updated: 14/09/2013)
  • Confluent and reticulate papillomatosis (syn. Gougerot-Carteaud syndrome)     (Last Updated: 09/12/2015)
  • Congenital melanocytic naevus     (Last Updated: 24/02/2018)
  • Connective tissue disorders - an overview     (Last Updated: 06/07/2016)
  • Corns and callosities (syn. calluses)     (Last Updated: 06/07/2016)
  • Costal fringe     (Last Updated: 19/01/2013)
  • Cow’s Milk Protein Allergy     (Last Updated: 19/07/2013)
  • Cowden syndrome (syn. multiple hamartoma syndrome)     (Last Updated: 30/06/2013)
  • Cryoglobulinaemic vasculitis     (Last Updated: 27/06/2015)
  • Cryoproteins     (Last Updated: 19/09/2012)
  • Cryptococcus     (Last Updated: 22/07/2015)
  • Cryptosporidiosis     (Last Updated: 22/07/2015)
  • Cutaneous horn     (Last Updated: 24/04/2017)
  • Cutaneous larva migrans     (Last Updated: 09/11/2015)
  • Cutaneous leiomyoma     (Last Updated: 01/11/2014)
  • Cutaneous lymphoma     (Last Updated: 24/11/2014)
  • Cutaneous metastases     (Last Updated: 06/07/2015)
  • Cutaneous small vessel vasculitis (syn. leucocytoclastic vasculitis)     (Last Updated: 27/06/2015)
  • Cutis laxa     (Last Updated: 02/07/2016)
  • Cylindroma     (Last Updated: 30/06/2013)
  • Cytomegalovirus     (Last Updated: 22/07/2015)

D

  • Darier’s disease     (Last Updated: 24/04/2017)
  • Delusion of parasitosis     (Last Updated: 18/01/2013)
  • Dengue fever     (Last Updated: 09/11/2015)
  • Dercum’s disease (syn. adiposis dolorosa)     (Last Updated: 03/06/2013)
  • Dermatitis     (Last Updated: 17/01/2017)
  • Dermatitis artefacta (a type of self-harm)     (Last Updated: 19/11/2017)
  • Dermatitis herpetiformis     (Last Updated: 08/11/2016)
  • Dermatofibroma (syn. histiocytoma)     (Last Updated: 19/11/2017)
  • Dermatofibrosarcoma protuberans     (Last Updated: 01/11/2014)
  • Dermatomyositis (including polymyositis)     (Last Updated: 24/04/2017)
  • Dermatosis papulosa nigra     (Last Updated: 28/11/2013)
  • Dermoid cyst     (Last Updated: 01/11/2014)
  • Desmoplastic naevus     (Last Updated: 02/07/2015)
  • Diffuse large B-cell lymphoma     (Last Updated: 22/08/2013)
  • Discoid lupus erythematosus     (Last Updated: 14/05/2015)
  • Dissecting cellulitis     (Last Updated: 17/12/2013)
  • Disseminate and recurrent infundibulofolliculitis     (Last Updated: 23/11/2014)
  • Drug Hypersensitivity syndrome (syn. Drug Rash with Eosinophilia and Systemic Symptoms or DRESS)     (Last Updated: 02/11/2014)
  • Drug rashes - an overview     (Last Updated: 06/07/2016)
  • Drug rashes: mild to moderate     (Last Updated: 19/03/2017)
  • Drug rashes: photosensitive     (Last Updated: 10/11/2013)
  • Drug rashes: severe     (Last Updated: 16/07/2015)
  • Dyskeratosis congenita (syn. the Zinsser-Engman-Cole syndrome)     (Last Updated: 28/11/2013)

E

  • Eccrine hidrocystoma     (Last Updated: 30/06/2013)
  • Eccrine poroma     (Last Updated: 30/06/2013)
  • Ecthyma (including ecthyma gangrenosum)     (Last Updated: 30/07/2015)
  • Eczema - atopic eczema     (Last Updated: 20/02/2018)
  • Eczema: asteatotic eczema (syn. xerotic eczema, eczema craquele)     (Last Updated: 02/11/2014)
  • Eczema: contact allergic dermatitis (including latex and rubber allergy)     (Last Updated: 02/11/2014)
  • Eczema: discoid (syn. nummular) eczema     (Last Updated: 08/11/2016)
  • Eczema: eczema herpeticum     (Last Updated: 24/04/2017)
  • Eczema: gravitational eczema (syn. varicose eczema or stasis dermatitis)     (Last Updated: 20/12/2016)
  • Eczema: hand (and foot) eczema     (Last Updated: 19/03/2017)
  • Eczema: napkin eczema     (Last Updated: 02/11/2014)
  • Ehlers-Danlos syndrome     (Last Updated: 02/07/2016)
  • Elastosis perforans serpiginosa     (Last Updated: 24/12/2015)
  • Elephantiasis     (Last Updated: 08/07/2016)
  • Emollients     (Last Updated: 06/07/2016)
  • En coup de sabre     (Last Updated: 10/05/2015)
  • ENA-positive annular erythema     (Last Updated: 16/09/2015)
  • Eosinophilic cellulitis (syn. Wells syndrome)     (Last Updated: 09/08/2015)
  • Eosinophilic fasciits     (Last Updated: 09/08/2015)
  • Eosinophilic folliculitis     (Last Updated: 24/08/2014)
  • Ephelides (syn. freckles)     (Last Updated: 24/04/2017)
  • Epidermal naevi - an overview     (Last Updated: 20/11/2015)
  • Epidermodysplasia verruciformis     (Last Updated: 30/12/2015)
  • Epidermoid cyst (syn. epithelial cyst. Sebaceous cyst is a misnomer)     (Last Updated: 08/11/2016)
  • Epidermolysis bullosa     (Last Updated: 17/01/2015)
  • Epidermolysis bullosa acquisita     (Last Updated: 17/01/2015)
  • Epidermolytic hyperkeratosis (syn. bullous ichthyosiform erythroderma)     (Last Updated: 20/11/2015)
  • Erosive pustular dermatosis of the scalp     (Last Updated: 13/10/2014)
  • Eruptive vellus hair cysts     (Last Updated: 10/05/2016)
  • Eruptive xanthomata     (Last Updated: 08/09/2013)
  • Erysipelas     (Last Updated: 04/03/2015)
  • Erysipeloid     (Last Updated: 09/08/2015)
  • Erythema (chronicum) migrans - the cutaneous features of Lyme disease     (Last Updated: 27/09/2015)
  • Erythema ab igne     (Last Updated: 02/07/2016)
  • Erythema annulare centrifugum     (Last Updated: 15/09/2015)
  • Erythema dyschromicum perstans (syn. ashy dermatosis)     (Last Updated: 23/11/2014)
  • Erythema elevatum diutinum     (Last Updated: 23/05/2016)
  • Erythema gyratum repens     (Last Updated: 15/09/2015)
  • Erythema infectiosum (syn. fifth disease; slapped cheek syndrome)     (Last Updated: 30/01/2014)
  • Erythema multiforme     (Last Updated: 18/11/2016)
  • Erythema nodosum     (Last Updated: 06/07/2016)
  • Erythrasma     (Last Updated: 27/01/2017)
  • Erythroderma (syn. exfoliative dermatitis)     (Last Updated: 27/07/2015)
  • Erythrokeratoderma variabilis     (Last Updated: 26/11/2015)
  • Erythromelalgia     (Last Updated: 18/11/2016)
  • Erythromelanosis follicularis faciei et colli     (Last Updated: 05/03/2015)
  • Erythroplasia of Queyrat / Bowen’s disease of the penis / bowenoid papulosis     (Last Updated: 12/08/2016)
  • Exercise-induced vasculitis     (Last Updated: 27/06/2015)
  • Exogenous ochronosis     (Last Updated: 28/11/2013)
  • Extramammary Paget’s disease     (Last Updated: 30/06/2013)

F

  • Fibroepithelioma of Pinkus     (Last Updated: 02/11/2014)
  • Fibrofolliculoma     (Last Updated: 30/06/2013)
  • Fibrous papule     (Last Updated: 23/11/2014)
  • Fibrous tumours     (Last Updated: 03/11/2014)
  • Fissured tongue     (Last Updated: 05/08/2016)
  • Fixed drug eruption     (Last Updated: 18/01/2013)
  • Flegel’s disease     (Last Updated: 24/12/2015)
  • Florid cutaneous papillomatosis     (Last Updated: 19/08/2016)
  • Flushing     (Last Updated: 06/07/2016)
  • Focal dermal hypoplasia     (Last Updated: 25/06/2016)
  • Follicle centre cell lymphoma     (Last Updated: 22/08/2013)
  • Follicular mucinosis     (Last Updated: 22/08/2013)
  • Folliculitis and boils (furuncles / carbuncles)     (Last Updated: 19/11/2017)
  • Folliculitis barbae     (Last Updated: 07/11/2014)
  • Folliculitis decalvans     (Last Updated: 24/11/2016)
  • Folliculotropic mycosis fungoides     (Last Updated: 22/08/2013)
  • Food allergy (including cow’s milk protein allergy)     (Last Updated: 06/07/2016)
  • Fordyce spots (syn. Fordyce’s granules)     (Last Updated: 07/04/2015)
  • Foreign bodies (including penetrating injuries and tattoos)     (Last Updated: 23/11/2014)
  • Fox-Fordyce disease (syn. apocrine miliaria)     (Last Updated: 24/11/2016)
  • Frey Syndrome     (Last Updated: 23/02/2014)
  • Frontal fibrosing alopecia     (Last Updated: 18/01/2013)
  • Furuncles     (Last Updated: 03/11/2014)

G

  • Ganglion     (Last Updated: 18/11/2016)
  • Gardner syndrome     (Last Updated: 30/06/2013)
  • Generalised essential telangiectasia     (Last Updated: 19/01/2013)
  • Genital leiomyoma     (Last Updated: 24/04/2013)
  • Geographic tongue     (Last Updated: 05/08/2016)
  • Gianotti-Crosti syndrome (syn. papular acrodermatitis of childhood)     (Last Updated: 30/01/2014)
  • Giant cell arteritis     (Last Updated: 27/06/2015)
  • Giant comedone     (Last Updated: 05/01/2015)
  • Glomus tumour     (Last Updated: 30/07/2015)
  • Gougerot-Blum syndrome (pigmented purpuric lichenoid dermatosis)     (Last Updated: 17/06/2015)
  • Gouty tophi     (Last Updated: 08/11/2014)
  • Gram-negative folliculitis     (Last Updated: 08/11/2014)
  • Granuloma annulare     (Last Updated: 24/11/2016)
  • Granuloma faciale     (Last Updated: 24/04/2017)
  • Granuloma inguinale (syn. Donovanosis)     (Last Updated: 09/11/2015)
  • Granulomatous rosacea syn. acne agminata; lupus miliaris disseminatus faciei     (Last Updated: 08/01/2018)
  • Granulosis rubra nasi     (Last Updated: 14/04/2016)
  • Grover’s disease (syn. transient acantholytic dermatosis)     (Last Updated: 23/11/2014)

H

  • Habit-tic nail deformity     (Last Updated: 02/05/2016)
  • Haemangioma and other vascular tumours and malformations     (Last Updated: 06/07/2016)
  • Haemochromatosis     (Last Updated: 28/11/2013)
  • Hailey-Hailey disease (syn. familial benign chronic pemphigus)     (Last Updated: 27/01/2017)
  • Hairy tongue     (Last Updated: 05/08/2016)
  • Half-and-half nails     (Last Updated: 02/05/2016)
  • Halo naevus (syn. Sutton naevus)     (Last Updated: 06/07/2016)
  • Hand, foot and mouth disease     (Last Updated: 30/01/2014)
  • Harlequin ichthyosis     (Last Updated: 20/11/2015)
  • Head lice (syn. pediculosis capitis)     (Last Updated: 24/11/2016)
  • Henoch-Schönlein purpura     (Last Updated: 27/06/2015)
  • Hereditary haemorrhagic telangiectasia (syn. Rendu-Osler-Weber syndome)     (Last Updated: 19/01/2013)
  • Hereditary leiomyomatosis and renal cell cancer (HLRCC)     (Last Updated: 24/04/2013)
  • Herpes simplex     (Last Updated: 24/04/2017)
  • Herpes zoster (syn. shingles)     (Last Updated: 24/04/2017)
  • Hidradenitis suppurativa (syn. acne inversa)     (Last Updated: 24/04/2017)
  • Hidradenoma     (Last Updated: 30/06/2013)
  • Hidradenoma papilliferum     (Last Updated: 30/06/2013)
  • Hidroacanthoma simplex     (Last Updated: 30/06/2013)
  • Hirsutism     (Last Updated: 29/05/2017)
  • Histiocytoses     (Last Updated: 18/06/2016)
  • Histoplasmosis     (Last Updated: 22/07/2015)
  • HIV and AIDS - cutaneous features     (Last Updated: 30/07/2015)
  • Hori’s naevus     (Last Updated: 05/12/2013)
  • Human flea (Pulex irritans)     (Last Updated: 24/08/2014)
  • Hydroa vacciniforme     (Last Updated: 08/08/2015)
  • Hyperandrogenism     (Last Updated: 07/08/2017)
  • Hyperhidrosis (excessive sweating)     (Last Updated: 24/04/2017)
  • Hyperpigmentation - of the face and neck     (Last Updated: 06/11/2017)
  • Hypertrichosis     (Last Updated: 15/02/2013)
  • Hypertrophic scars     (Last Updated: 31/05/2013)
  • Hypocomplementaemia     (Last Updated: 19/09/2012)
  • Hypomelanosis of Ito     (Last Updated: 22/06/2016)

I

  • Ichthyosis     (Last Updated: 24/04/2017)
  • Ichthyosis hystrix     (Last Updated: 20/11/2015)
  • Ichthyosis vulgaris     (Last Updated: 20/11/2015)
  • Idiopathic eruptive macular pigmentation     (Last Updated: 04/07/2016)
  • Idiopathic guttate hypomelanosis     (Last Updated: 04/04/2016)
  • Immunofluorescence     (Last Updated: 19/09/2012)
  • Immunohistochemistry     (Last Updated: 19/09/2012)
  • Impetigo     (Last Updated: 19/11/2017)
  • Incontinentia pigmenti     (Last Updated: 22/06/2016)
  • Infantile digital fibromatosis     (Last Updated: 15/11/2014)
  • Inflammatory linear verrucous epidermal naevus (ILVEN)     (Last Updated: 23/11/2014)
  • Intertrigo     (Last Updated: 15/08/2016)
  • Inverted follicular keratosis     (Last Updated: 30/06/2013)
  • Itching purpura     (Last Updated: 17/06/2015)

J

  • Jessner’s lymphocytic infiltrate (syn. Jessner-Kanof syndrome)     (Last Updated: 24/04/2017)
  • Juvenile plantar dermatosis     (Last Updated: 06/07/2016)
  • Juvenile spring eruption     (Last Updated: 15/11/2014)
  • Juvenile xanthogranuloma     (Last Updated: 30/07/2015)

K

  • Kaposi’s sarcoma (syn. Kaposi’s haemorrhagic sarcoma)     (Last Updated: 30/07/2015)
  • Kawasaki disease     (Last Updated: 30/07/2015)
  • Keloid scars     (Last Updated: 06/07/2016)
  • Keratoacanthoma     (Last Updated: 24/04/2017)
  • Keratoderma     (Last Updated: 24/12/2015)
  • Keratolysis exfoliativa     (Last Updated: 26/11/2015)
  • Keratosis lichenoides chronica (syn. Nekam’s disease)     (Last Updated: 12/06/2016)
  • Keratosis pilaris (and its variants)     (Last Updated: 13/12/2016)
  • Keratosis rubra pilaris faciei atrophicans (syn. ulerythema ophryogenes)     (Last Updated: 02/03/2015)
  • Kerion     (Last Updated: 15/11/2014)
  • Klippel-Trenaunay syndrome     (Last Updated: 19/01/2013)
  • Knuckle pads (syn. Garrod’s pads; holoderma)     (Last Updated: 16/05/2016)
  • Koilonychia     (Last Updated: 02/05/2016)
  • Kyrle’s disease     (Last Updated: 24/12/2015)

L

  • Lamellar ichthyosis     (Last Updated: 20/11/2015)
  • Lamellar nail dystrophy     (Last Updated: 02/05/2016)
  • Langerhans cell histiocytosis     (Last Updated: 10/09/2016)
  • Lassueur Graham-Little Piccardi Syndrome     (Last Updated: 18/01/2013)
  • Late-onset (non-classical) congenital adrenal hyperplasia     (Last Updated: 15/02/2013)
  • Latex and rubber allergy     (Last Updated: 18/01/2013)
  • Leg ulcers (and disorders of venous insufficiency)     (Last Updated: 17/10/2016)
  • Leiomyoma     (Last Updated: 10/05/2013)
  • Leiomyosarcoma     (Last Updated: 15/11/2014)
  • Leishmaniasis     (Last Updated: 09/11/2015)
  • Lentigo (syn. lentigine)     (Last Updated: 02/02/2017)
  • Lentigo maligna     (Last Updated: 06/07/2016)
  • Leprosy     (Last Updated: 09/11/2015)
  • Leser-Trélat sign     (Last Updated: 19/08/2016)
  • Leucocytoclastic vasculitis     (Last Updated: 27/06/2015)
  • Leukaemia cutis     (Last Updated: 22/08/2013)
  • Leukonychia     (Last Updated: 02/05/2016)
  • Leukoplakia (and other white patches in the mouth)     (Last Updated: 19/11/2014)
  • Lice (syn. Phthiraptera)     (Last Updated: 26/06/2014)
  • Lichen aureus     (Last Updated: 17/06/2015)
  • Lichen myxoedematosus     (Last Updated: 01/06/2016)
  • Lichen nitidus     (Last Updated: 17/03/2016)
  • Lichen planopilaris     (Last Updated: 18/01/2013)
  • Lichen planus     (Last Updated: 24/04/2017)
  • Lichen planus - follicular lichen planus     (Last Updated: 24/11/2016)
  • Lichen planus pigmentosus     (Last Updated: 05/11/2013)
  • Lichen sclerosus (syn. lichen sclerosus et atrophicus)     (Last Updated: 29/06/2017)
  • Lichen scrofulosorum     (Last Updated: 29/10/2015)
  • Lichen simplex (syn. circumscribed neurodermatitis)     (Last Updated: 13/12/2016)
  • Lichen spinulosus (syn. keratosis spinulosa)     (Last Updated: 30/12/2015)
  • Lichen striatus     (Last Updated: 04/04/2016)
  • Lichenoid eruption     (Last Updated: 14/09/2012)
  • Lichenoid keratosis (syn. lichen planus-like keratosis)     (Last Updated: 21/11/2014)
  • Light microscopy     (Last Updated: 19/09/2012)
  • Linear and whorled naevoid hypermelanosis     (Last Updated: 25/06/2016)
  • Linear atrophoderma of Moulin     (Last Updated: 25/06/2016)
  • Linear IgA disease (syn. chronic bullous disease of childhood; linear IgA bullous dermatosis)     (Last Updated: 06/09/2015)
  • Lipoatrophy, lipodystrophy, and panatrophy     (Last Updated: 02/07/2016)
  • Lipodermatosclerosis     (Last Updated: 16/01/2015)
  • Lipoma     (Last Updated: 06/07/2016)
  • Lipomatosis     (Last Updated: 30/05/2013)
  • Liposarcoma     (Last Updated: 21/11/2014)
  • Liquid nitrogen     (Last Updated: 06/07/2016)
  • Livedo reticularis     (Last Updated: 12/07/2015)
  • Livedoid vasculopathy     (Last Updated: 27/06/2015)
  • Longitudinal melanonychia     (Last Updated: 02/05/2016)
  • Lupus erythematosus     (Last Updated: 07/06/2017)
  • Lupus pernio     (Last Updated: 11/01/2016)
  • Lupus vulgaris     (Last Updated: 29/10/2015)
  • Lyme disease (and erythema migrans)     (Last Updated: 24/04/2017)
  • Lymphangioma circumscriptum     (Last Updated: 21/11/2014)
  • Lymphocytoma cutis     (Last Updated: 02/10/2015)
  • Lymphoedema     (Last Updated: 24/04/2017)
  • Lymphogranuloma venerum     (Last Updated: 09/11/2015)
  • Lymphoma and leukaemia - cutaneous presentations     (Last Updated: 28/04/2017)
  • Lymphomatoid papulosis     (Last Updated: 22/08/2013)

M

  • Majocchi’s purpura (purpura annularis telangiectodes)     (Last Updated: 17/06/2015)
  • Malaria     (Last Updated: 09/11/2015)
  • Malassezia folliculitis (syn. pityrosporum folliculitis)     (Last Updated: 21/11/2014)
  • Malignant eccrine poroma (syn. porocarcinoma)     (Last Updated: 30/06/2013)
  • Marginal zone lymphoma     (Last Updated: 22/08/2013)
  • Mastocytoma     (Last Updated: 24/04/2017)
  • Mastocytosis     (Last Updated: 24/04/2017)
  • Materia alba     (Last Updated: 05/08/2016)
  • Maturational dyschromia     (Last Updated: 28/11/2013)
  • McCune-Albright syndrome     (Last Updated: 27/06/2016)
  • Measles     (Last Updated: 30/01/2014)
  • Median nail dystrophy     (Last Updated: 02/05/2016)
  • Median rhomboid glossitis     (Last Updated: 05/08/2016)
  • Melanocytic naevi     (Last Updated: 25/04/2017)
  • Melanoma - an overview     (Last Updated: 25/04/2017)
  • Melanoma: acral-lentiginous melanoma (including subungual melanoma)     (Last Updated: 16/04/2016)
  • Melanoma: lentigo maligna melanoma (including lentigo maligna)     (Last Updated: 25/04/2017)
  • Melanoma: nodular melanoma     (Last Updated: 01/01/2015)
  • Melanoma: superficial spreading melanoma (including melanoma in situ)     (Last Updated: 17/11/2015)
  • Melasma (syn. chloasma)     (Last Updated: 06/11/2017)
  • Meningococcal septicaemia     (Last Updated: 12/07/2015)
  • Merkel cell carcinoma     (Last Updated: 16/08/2017)
  • Meyerson’s naevus     (Last Updated: 21/11/2014)
  • Microcystic adnexal carcinoma (syn. sclerosing/syringomatous sweat duct carcinoma)     (Last Updated: 30/06/2013)
  • Microscopic polyarteritis     (Last Updated: 27/06/2015)
  • Milia     (Last Updated: 27/04/2017)
  • Milker’s nodule     (Last Updated: 09/08/2015)
  • Mixed connective tissue disorder and overlap syndromes     (Last Updated: 23/06/2015)
  • Mixed tumour of the skin (syn. chondroid syringoma)     (Last Updated: 30/06/2013)
  • Moles     (Last Updated: 19/01/2013)
  • Molluscum contagiosum     (Last Updated: 15/12/2016)
  • Mongolian spots     (Last Updated: 21/11/2014)
  • Morgellon’s syndrome     (Last Updated: 20/03/2017)
  • Morphoea     (Last Updated: 06/07/2016)
  • Morton’s neuroma     (Last Updated: 22/08/2014)
  • Mucinoses     (Last Updated: 10/11/2016)
  • Mucocele (syn. mucous extravasation cyst; mucous retention cyst; ranula)     (Last Updated: 21/11/2014)
  • Mucosal melanocytic macules     (Last Updated: 19/11/2017)
  • Mucous membrane pemphigoid (syn. cicatricial pemphigoid)     (Last Updated: 16/03/2015)
  • Muir-Torre syndrome     (Last Updated: 30/06/2013)
  • Multicentric reticulohistiocytosis     (Last Updated: 21/11/2014)
  • Multiple minute digitate hyperkeratosis (syn. spiny hyperkeratosis)     (Last Updated: 30/12/2015)
  • Mycobacterial infections     (Last Updated: 27/10/2016)
  • Mycology     (Last Updated: 19/09/2012)
  • Mycosis fungoides     (Last Updated: 22/08/2013)
  • Myiasis     (Last Updated: 09/11/2015)
  • Myxoid cyst (syn. mucous cyst)     (Last Updated: 01/09/2013)

N

  • Naevus anaemicus     (Last Updated: 23/11/2014)
  • Naevus depigmentosus (syn. achromic naevus)     (Last Updated: 22/06/2016)
  • Naevus of Ota and Ito     (Last Updated: 28/04/2017)
  • Naevus sebaceous of Jadassohn (syn. sebaceous naevus; organoid naevus)     (Last Updated: 30/06/2013)
  • Nail disorders     (Last Updated: 06/07/2016)
  • Nasal glioma     (Last Updated: 22/08/2014)
  • Necrobiosis lipoidica     (Last Updated: 15/12/2016)
  • Necrolytic migratory erythema     (Last Updated: 20/06/2016)
  • Necrotising fasciitis     (Last Updated: 04/03/2015)
  • Netherton’s syndrome     (Last Updated: 20/11/2015)
  • Neurofibroma     (Last Updated: 14/04/2013)
  • Neurofibromatosis type 1 (syn. von Recklinghausen’s disease)     (Last Updated: 28/04/2017)
  • Neutrophilic dermatoses     (Last Updated: 23/02/2015)
  • Neutrophilic dermatosis of the (dorsal) hands     (Last Updated: 21/01/2015)
  • Nodular prurigo (syn. Hyde’s prurigo)     (Last Updated: 27/05/2014)
  • Nodular vasculitis     (Last Updated: 27/06/2015)
  • Non-bullous congenital ichthyosiform erythroderma     (Last Updated: 20/11/2015)
  • Notalgia paraesthetica     (Last Updated: 18/01/2013)

O

  • Opportunistic skin infections     (Last Updated: 30/07/2015)
  • Oral Allergy syndrome     (Last Updated: 23/11/2014)
  • Oral lesions / and other dermatological conditions of the mouth     (Last Updated: 19/03/2017)
  • Orf     (Last Updated: 09/08/2015)
  • Orofacial granulomatosis (including granulomatous cheilitis)     (Last Updated: 04/09/2017)
  • Oudtshoorn disease (syn. keratolytic winter erythema)     (Last Updated: 26/11/2015)

P

  • Pachyonychia congenita     (Last Updated: 30/12/2015)
  • Paget’s disease of the nipple     (Last Updated: 30/06/2013)
  • Pagetoid reticulosis     (Last Updated: 22/08/2013)
  • Palmar xanthomata     (Last Updated: 23/11/2014)
  • Palmoplantar keratoderma     (Last Updated: 20/11/2017)
  • Panniculitis     (Last Updated: 06/07/2016)
  • Panton-Valentine leukocidin (PVL) - associated Staphylococcus aureus     (Last Updated: 23/11/2014)
  • Papular dermatitis     (Last Updated: 01/06/2014)
  • Papular prurigo     (Last Updated: 01/06/2014)
  • Papular-purpuric gloves and socks syndrome (PPGSS)     (Last Updated: 30/01/2014)
  • Papular urticaria     (Last Updated: 20/11/2017)
  • Papuloerythroderma of Ofuji     (Last Updated: 10/07/2015)
  • Papulonecrotic tuberculid     (Last Updated: 29/10/2015)
  • Paraneoplastic conditions     (Last Updated: 20/08/2016)
  • Paraneoplastic pemphigus     (Last Updated: 06/09/2015)
  • Parapsoriasis     (Last Updated: 05/04/2016)
  • Paronychia     (Last Updated: 08/11/2016)
  • Pearly penile papules     (Last Updated: 12/04/2015)
  • Pediculosis     (Last Updated: 02/07/2015)
  • Peeling skin conditions     (Last Updated: 06/07/2016)
  • Peeling Skin syndromes     (Last Updated: 26/11/2015)
  • Pemphigoid gestationis (pemphigoid of pregnancy)     (Last Updated: 18/01/2015)
  • Pemphigus foliaceus (and its variants)     (Last Updated: 06/09/2015)
  • Pemphigus vulgaris and pemphigus vegetans     (Last Updated: 28/04/2017)
  • Perforating dermatoses     (Last Updated: 29/12/2015)
  • Perioral dermatitis / periocular dermatitis (syn. periorifacial dermatitis)     (Last Updated: 20/11/2017)
  • Periorbital hyperpigmentation (syn. dark circles; periorbital hypermelanosis)     (Last Updated: 28/11/2013)
  • Peripheral neuroectodermal tumours     (Last Updated: 28/04/2017)
  • Periungal fibromas     (Last Updated: 27/08/2013)
  • Perniosis (syn. chilblains)     (Last Updated: 11/08/2015)
  • Peutz-Jeghers syndrome     (Last Updated: 15/08/2016)
  • Photodermatoses: an overview     (Last Updated: 06/07/2016)
  • Photodermatoses: drug / chemical-induced     (Last Updated: 24/04/2017)
  • Phrynoderma     (Last Updated: 30/12/2015)
  • Phytophotodermatitis     (Last Updated: 09/11/2013)
  • Piebaldism     (Last Updated: 20/11/2017)
  • Piezogenic pedal papules     (Last Updated: 24/11/2014)
  • Pigmentary demarcation lines (syn. Futcher’s lines; Voigt’s lines)     (Last Updated: 02/07/2016)
  • Pigmented purpuric dermatoses (syn. capillaritis)     (Last Updated: 27/01/2017)
  • Pigmented skin types - clinical variations     (Last Updated: 20/11/2017)
  • Pigmented spindle cell naevus of Reed     (Last Updated: 19/01/2013)
  • Pilar cyst (syn. trichilemmal cyst)     (Last Updated: 08/11/2016)
  • Piloleiomyoma     (Last Updated: 24/04/2013)
  • Pilomatricoma (syn. pilomatrixoma)     (Last Updated: 30/06/2013)
  • Pincer nail deformity     (Last Updated: 02/05/2016)
  • Pitted keratolysis     (Last Updated: 11/04/2017)
  • Pityriasis alba     (Last Updated: 15/12/2016)
  • Pityriasis amiantacea     (Last Updated: 24/11/2014)
  • Pityriasis lichenoides     (Last Updated: 20/11/2017)
  • Pityriasis rosea     (Last Updated: 15/12/2016)
  • Pityriasis rotunda     (Last Updated: 19/08/2016)
  • Pityriasis rubra pilaris     (Last Updated: 28/07/2015)
  • Pityriasis versicolor     (Last Updated: 15/12/2016)
  • Plane xanthomata     (Last Updated: 08/09/2013)
  • Poikiloderma of Civatte     (Last Updated: 28/11/2013)
  • Poikilodermatous mycoses fungoides (syn. poikiloderma atrophicans vasculare)     (Last Updated: 24/11/2014)
  • Polyarteritis nodosa     (Last Updated: 27/06/2015)
  • Polycystic Ovarian syndrome (PCOS)     (Last Updated: 24/11/2014)
  • Polymorphic eruption of pregnancy (syn. pruritic urticarial papules and plaques of pregnancy)     (Last Updated: 15/12/2016)
  • Polymorphic light eruption & juvenile spring eruption     (Last Updated: 20/12/2016)
  • Porokeratosis     (Last Updated: 08/11/2016)
  • Porphyria     (Last Updated: 20/11/2017)
  • Port-wine stain (syn. naevus flammeus)     (Last Updated: 28/04/2017)
  • Post-chikungunya pigmentation     (Last Updated: 28/11/2013)
  • Pregnancy related skin conditions - an overview     (Last Updated: 06/11/2017)
  • Pretibial myxoedema     (Last Updated: 01/06/2016)
  • Primary cutaneous (anaplastic) CD30+ large cell lymphoma     (Last Updated: 22/08/2013)
  • Primary cutaneous B-cell lymphoma     (Last Updated: 22/08/2013)
  • Primary cutaneous CD30+ lymphoproliferative disorders     (Last Updated: 22/08/2013)
  • Primary cutaneous T-cell lymphoma     (Last Updated: 22/08/2013)
  • Progressive macular hypomelanosis     (Last Updated: 04/04/2016)
  • Progressive symmetric erythrokeratoderma     (Last Updated: 26/11/2015)
  • Prurigo     (Last Updated: 28/04/2017)
  • Pruritic Urticarial Papules and Plaques of Pregnancy (syn. PUPPP)     (Last Updated: 20/11/2014)
  • Pruritus (without a rash)     (Last Updated: 20/11/2017)
  • Pruritus ani     (Last Updated: 19/01/2017)
  • Pseudofolliculitis     (Last Updated: 24/08/2014)
  • Pseudomonal nail infection     (Last Updated: 02/05/2016)
  • Pseudomonas folliculitis (syn. bathing suit folliculitis)     (Last Updated: 27/11/2014)
  • Pseudopelade of Brocq     (Last Updated: 17/12/2013)
  • Pseudoporphyria     (Last Updated: 26/11/2014)
  • Pseudoxanthoma elasticum (syn. Gronblad-Strandberg syndrome)     (Last Updated: 28/04/2017)
  • Psoriasis: an overview and chronic plaque psoriasis     (Last Updated: 20/11/2017)
  • Psoriasis: childhood psoriasis     (Last Updated: 20/11/2017)
  • Psoriasis: facial psoriasis     (Last Updated: 20/11/2017)
  • Psoriasis: flexural and genital psoriasis     (Last Updated: 16/03/2017)
  • Psoriasis: generalised pustular psoriasis (syn. von Zumbusch psoriasis)     (Last Updated: 26/11/2014)
  • Psoriasis: guttate psoriasis     (Last Updated: 26/11/2014)
  • Psoriasis: hyperkeratotic hand / foot psoriasis     (Last Updated: 26/11/2014)
  • Psoriasis: nail psoriasis     (Last Updated: 26/11/2014)
  • Psoriasis: palmoplantar pustulosis     (Last Updated: 15/12/2016)
  • Psoriasis: psoriatic arthritis     (Last Updated: 19/10/2017)
  • Psoriasis: scalp psoriasis     (Last Updated: 20/02/2018)
  • Pubic lice (syn. pediculosis pubis)     (Last Updated: 02/07/2015)
  • Pyoderma gangrenosum     (Last Updated: 20/12/2016)
  • Pyogenic granuloma     (Last Updated: 20/11/2017)

R

  • Ramsay-Hunt syndrome     (Last Updated: 02/03/2014)
  • Raynaud’s phenomenon     (Last Updated: 06/03/2018)
  • Reactive arthritis (syn. Reiters syndrome)     (Last Updated: 05/08/2016)
  • Red Scrotum syndrome     (Last Updated: 12/08/2016)
  • Relapsing polychondritis     (Last Updated: 12/06/2016)
  • Reticular erythematous mucinosis     (Last Updated: 10/09/2016)
  • Rheumatoid arthritis and Still’s disease     (Last Updated: 27/06/2015)
  • Rheumatoid nodules     (Last Updated: 27/11/2014)
  • Rocky Mountain spotted fever (RMSF)     (Last Updated: 09/11/2015)
  • Rosacea     (Last Updated: 08/01/2018)
  • Roseola (syn. roseola infantum, exanthema subitum)     (Last Updated: 27/11/2014)
  • Ross Syndrome     (Last Updated: 23/02/2014)
  • Rubellla     (Last Updated: 30/01/2014)

S

  • Salmon patch (including stork bite)     (Last Updated: 27/11/2014)
  • Sarcoid     (Last Updated: 30/09/2015)
  • Sarcoma     (Last Updated: 19/09/2013)
  • Scabies     (Last Updated: 20/12/2016)
  • Scarlet fever (syn. scarlatina)     (Last Updated: 30/01/2014)
  • Scars - hypertrophic and keloid     (Last Updated: 21/11/2017)
  • Schamberg disease     (Last Updated: 17/06/2015)
  • Schistosomiasis (Bilharzia) - Katayama fever     (Last Updated: 09/11/2015)
  • Schwannoma (syn. neurilemmoma)     (Last Updated: 22/08/2014)
  • Scleredema     (Last Updated: 27/05/2016)
  • Scleroderma (syn. morphoea)     (Last Updated: 15/12/2016)
  • Scleromyxoedema     (Last Updated: 01/06/2016)
  • Scrofuloderma     (Last Updated: 29/10/2015)
  • Scrotal calcinosis     (Last Updated: 02/06/2016)
  • Sebaceous adenoma and sebaceomas     (Last Updated: 30/06/2013)
  • Sebaceous carcinoma     (Last Updated: 30/06/2013)
  • Sebaceous gland hyperplasia     (Last Updated: 27/11/2014)
  • Seborrhoeic eczema     (Last Updated: 20/12/2016)
  • Seborrhoeic keratosis (syn. seborrhoeic wart, basal cell papilloma)     (Last Updated: 20/12/2016)
  • Sézary syndrome     (Last Updated: 30/07/2015)
  • Shagreen patch     (Last Updated: 27/08/2013)
  • Sister Mary Joseph’s nodule     (Last Updated: 24/09/2013)
  • Sjögren’s syndrome     (Last Updated: 25/06/2015)
  • Skin swabs     (Last Updated: 19/09/2012)
  • Skin tag (syn. achrochordon; fibroepithelial polyp)     (Last Updated: 27/11/2014)
  • Sneddon’s syndrome     (Last Updated: 18/06/2015)
  • Solar elastosis (syn. actinic elastosis)     (Last Updated: 19/05/2016)
  • Solar lentigo     (Last Updated: 02/02/2017)
  • Solitary circumscribed neuroma (syn. palisaded encapsulated neuroma)     (Last Updated: 27/11/2014)
  • South African tick typhus (or African tick-bite fever)     (Last Updated: 09/11/2015)
  • Speckled lentiginous naevus (syn. naevus spilus)     (Last Updated: 27/11/2014)
  • Spider telangiectases (syn. spider naevus)     (Last Updated: 19/01/2013)
  • Spiradenoma (syn. eccrine spiradenoma)     (Last Updated: 30/06/2013)
  • Spitz naevus (including pigmented spindle cell naevus of Reed)     (Last Updated: 23/06/2015)
  • Squamous cell carcinoma     (Last Updated: 09/02/2017)
  • Staphylococcal Scalded Skin syndrome (syn. Ritter disease; staphylococcal epidermal necrolysis)     (Last Updated: 26/11/2015)
  • Steatocystoma multiplex     (Last Updated: 10/05/2016)
  • Stevens-Johnson syndrome     (Last Updated: 28/11/2014)
  • Still’s disease     (Last Updated: 17/05/2015)
  • Strawberry naevus and other infantile haemangioma     (Last Updated: 16/02/2018)
  • Striae (syn. stretch marks)     (Last Updated: 07/07/2016)
  • Stucco keratosis     (Last Updated: 28/11/2014)
  • Sturge-Weber syndrome     (Last Updated: 19/01/2013)
  • Subacute cutaneous lupus erythematosus     (Last Updated: 14/05/2015)
  • Subcorneal pustular dermatosis (syn. Sneddon-Wilkinson disease)     (Last Updated: 20/01/2015)
  • Subungual exostosis     (Last Updated: 07/05/2016)
  • Subungual haematoma     (Last Updated: 02/05/2016)
  • Sweet’s syndrome (syn. acute febrile neutrophilic dermatosis; Gomm-Button disease)     (Last Updated: 23/02/2015)
  • Sycosis barbae     (Last Updated: 28/11/2014)
  • Syphilis     (Last Updated: 21/11/2017)
  • Syringocystadenoma papilliferum     (Last Updated: 30/06/2013)
  • Syringoma (syn. syringocystadenoma, syringocystoma)     (Last Updated: 30/06/2013)
  • Systemic lupus erythematosus     (Last Updated: 14/05/2015)
  • Systemic sclerosis     (Last Updated: 02/06/2016)

T

  • Talon noir     (Last Updated: 28/11/2014)
  • Telangiectases     (Last Updated: 28/04/2017)
  • Telangiectasia macularis eruptiva perstans     (Last Updated: 13/05/2016)
  • Telogen effluvium     (Last Updated: 14/09/2013)
  • Tendon xanthomata     (Last Updated: 08/09/2013)
  • Terry’s nails     (Last Updated: 02/05/2016)
  • Tinea - an overview     (Last Updated: 07/07/2016)
  • Tinea capitis (scalp)     (Last Updated: 20/12/2016)
  • Tinea corporis (body), cruris (groin) and incognito (steroid exacerbated)     (Last Updated: 27/01/2017)
  • Tinea faciei (face) and barbae (beard)     (Last Updated: 28/04/2017)
  • Tinea manuum (hands), pedis (feet), and unguium (nails)     (Last Updated: 28/04/2017)
  • Topical steroids     (Last Updated: 17/04/2013)
  • Toxic epidermal necrolysis     (Last Updated: 28/11/2014)
  • Trachyonychia     (Last Updated: 02/05/2016)
  • Traction alopecia     (Last Updated: 15/12/2013)
  • Travel-acquired / worldwide cutaneous infections     (Last Updated: 27/01/2017)
  • Trichilemmal cyst     (Last Updated: 30/06/2013)
  • Trichilemmoma     (Last Updated: 30/06/2013)
  • Trichoblastoma     (Last Updated: 30/06/2013)
  • Trichodiscoma     (Last Updated: 30/06/2013)
  • Trichoepithelioma     (Last Updated: 30/06/2013)
  • Trichofolliculoma     (Last Updated: 30/06/2013)
  • Trichotillosis (formerly called trichotillomania)     (Last Updated: 15/12/2013)
  • Tripe palms (syn. acanthosis palmaris, acquired pachydermatoglyphia)     (Last Updated: 19/08/2016)
  • Tuberculosis     (Last Updated: 29/10/2015)
  • Tuberous sclerosis     (Last Updated: 28/04/2017)
  • Tuberous xanthomata     (Last Updated: 08/09/2013)
  • Tumour of the follicular infundibulum     (Last Updated: 30/06/2013)
  • Twenty-nail dystrophy     (Last Updated: 02/05/2016)

U

  • Unilateral laterothoracic exanthem (syn. asymmetric periflexural exanthem of childhood)     (Last Updated: 30/01/2014)
  • Unilateral naevoid telangiectasia     (Last Updated: 18/01/2013)
  • Urticaria: acute urticaria     (Last Updated: 21/11/2017)
  • Urticaria: chronic physical/inducible urticaria (eg pressure, cholinergic, contact, aquagenic)     (Last Updated: 21/11/2017)
  • Urticaria: contact urticaria     (Last Updated: 28/11/2014)
  • Urticaria: solar urticaria     (Last Updated: 30/10/2015)
  • Urticaria: spontaneous urticaria (formerly chronic ordinary urticaria; chronic idiopathic urticaria)     (Last Updated: 19/03/2017)
  • Urticaria and angioedema - an overview     (Last Updated: 21/11/2017)
  • Urticaria pigmentosa     (Last Updated: 13/05/2016)
  • Urticarial vasculitis     (Last Updated: 21/06/2015)

V

  • Varicella (syn. chickenpox)     (Last Updated: 23/02/2014)
  • Varicella-zoster virus (VZV) infection     (Last Updated: 02/03/2014)
  • Vasculitis     (Last Updated: 07/07/2016)
  • Venous lake     (Last Updated: 28/11/2014)
  • Verrucous epidermal naevi     (Last Updated: 20/11/2015)
  • Verrucous keratosis     (Last Updated: 10/09/2013)
  • Viral exanthems     (Last Updated: 07/07/2016)
  • Vitiligo     (Last Updated: 21/11/2017)
  • Vulval intraepithelial neoplasia (VIN) and squamous cell carcinoma     (Last Updated: 15/08/2016)

W

  • Waardenburg’s syndrome     (Last Updated: 04/07/2016)
  • Waldenstrom’s hypergammaglobulinaemic purpura     (Last Updated: 27/06/2015)
  • Warts     (Last Updated: 21/11/2017)
  • Weathering nodules     (Last Updated: 29/11/2014)
  • Wegener’s granulomatosis (syn. granulomatosis with polyangiitis)     (Last Updated: 27/06/2015)
  • White patches in the mouth     (Last Updated: 07/10/2013)

X

  • X-linked recessive ichthyosis     (Last Updated: 20/11/2015)
  • Xanthelasmata     (Last Updated: 08/09/2013)
  • Xanthoma disseminatum     (Last Updated: 01/12/2014)
  • Xanthomata     (Last Updated: 29/11/2014)
  • Xeroderma pigmentosum     (Last Updated: 28/04/2017)

Y

  • Yellow Nail syndrome     (Last Updated: 02/05/2016)

Z

  • Zoon plasma cell balanitis     (Last Updated: 11/08/2016)
  • Zygomycosis (syn. Mucormycosis)     (Last Updated: 22/07/2015)
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