Sup-T nigra

Question 1

Etio

Answer 1

Hortaea werneckii.

Question 2

presentation

Answer 2

one or several brown or blacj spots on palms and soles. confined to st corneum and scrapes off easily.

Question 3

used to diff from melanocytic tumors

Answer 3

Dermoscopy

Question 4

fungus demonstrated by

Answer 4

KOH. or culture.

KOH- Hyphae are brown or golden in color. pogment prod by fungal hyphae is melanin.

culture. pcr.

Question 5

tx

Answer 5

Topical imidazole and allylamines.
such as clotrimazole, miconazole, ketoconazole, sulconazole, econazole, terbinafine.
griseofulvin not effective.
simply shaving away sup epidermis w blade is both diagnostic and curative of tinea nigra.