Erythrasma (Corynebacterium minutissinum) Erythrasma Wood’s light: Coral-red fluorescence Treatment guidelines: • Topical imidazoles (miconazole, clotrimazole, econazole etc) Slapped cheek syndrome (Erythema infectiosum) childhood exanthem associated with human parvovirus B19 Herpes inf. • Oral Aciclovir 200mg x 5 a day for 5 days Eczema herpeticum: HSV infection on ground of atopic dermatitis Herpes inf. Treatment: • Oral or i.v aciclovir Molluscum contagiosum (MC) – “water blisters” Treatment: Caused by a pox virus • None • Manual extrusion with fine forceps 6-y-o asymptomatic girl C/O a slowly growing patch on her (L) side of the face for 1/12 Fungal inf. Fungal inf. Tinea facialis Erysipelas Tinea corporis Fungal inf. Tinea capitis Treatment for dermatophytoses: • Topical antifungal Rx for tinea corporis, facialis and pedis • Systemic Griseofulvin / terbinafine / itraconazole for tinea capitis and unguium Candida inf. 1/12 old neonate presents this rash for 1/52 Rx: Topical antifungals Pityr. versicolor • Wood’s light (yellow) Treatment: • ketoconazole shampoo • Clotrimazole cream Scabies sarcoptes scabies Scabies (sarcoptes scabies) Predilection sites: VERY IMPORTANT FOR THE DIAGNOSIS Image from: Fitzpatrick's Color Atlas & Synopsis of Clinical Dermatology 4th ed. 2001 Management & treatment guidelines: • Permethrin 5% cream • Treat head & neck regions in infants • Treat all family members in the same time • In Latin America: Ivermectin tbs Rashes associated with systemic disease 18-y-o girl C/O malaise, lowgrade fever and tender, dusky red deep nodules for 1/12 Erythema nodosum Acute inflammation of the dermis & fat tissue Most common causes (in UK): streptococcal infection (throat), sarcoidosis, idiopathic, drugs Management & treatment guidelines: Treatment: 1st line • Treat underlying cause • Symptomatic (NSAIDs, bed rest) 2nd line • Colchicine • Prednisone Erythema multiforme (EM) Def.: A cutaneous reaction to a variety of antigenic stimuli Mild: target-like lesions Management & treatment guidelines: • Symptomatic measures (oral antihistamines + top. steroids) • Oral ATBs (e.g. Erythromycin in case of Mycoplasma infection) • Oral aciclovir if associated with HSV infection (also for recurrent EM >6 attacks/year) 400mg BD x 6/12 to 2 years