View source for Cutaneous lupus erythematosus

<section begin="dermatology" />* Chronic discoid lupus erythematosus (CDLE)
** Epidemiology
*** Most common cutaneous type
*** African American women
** Clinical features
*** Erythematous scaling plaques
*** -> leaves atrophic scars
*** Ocular and mucosal lesions
*** Affects face, scalp, neck (sun-exposed areas)
*** No systemic symptoms
* Subacute cutaneous lupus erythematosus (SCLE)
** Clinical features
*** Persisting diffuse erythema on face or sun-exposed areas
*** Annular or psoriasiform erythematous plaques
*** Morbilliform rash on trunk
*** Affects neck, shoulders, forearms
** Diagnosis
*** Anti-Ro antibody
* Drug-induced lupus erythematosus (DILE)
** Resolves after discontinuation of the drug
** In elderly
** May occur years after starting the drug
** Etiology
*** Sulpha drugs
**** Thiazides
**** Sulfamethoxazole
**** Sulfasalazine
**** Sulfonylurea
*** Methyldopa
*** Isoniazid
**** Especially slow acetylators
*** Phenytoin
** Clinical features
*** Rash
*** Myalgia
*** Fever
*** Polyarthritis
*** Serositis
** Diagnosis
*** Anti-histone antibodies
* Treatment of cutaneous lupus erythematous
** Hydroxychloroquine
** Steroids
** Immunosuppressants
** Sunscreen<section end="dermatology" />

[[Category:Dermatology]]