For 1 week, a 2-year-old boy has had asymmetric erythematous patches on the anterior trunk. There is no family or personal history of eczema. His mother has not used new soaps or detergents recently; there are no pets in the household.
Which of the conditions in the differential is the likely diagnosis?
A. Nummular eczema.
B. Contact dermatitis.
D. Tinea corporis.
E. Granuloma annulare.
Which treatment do you prescribe?
F. An imidazole antifungal cream.
G. A corticosteroid cream.
H. An allylamine antifungal cream.
I. Topical mupirocin(Drug information on mupirocin).
J. None of the above.
A 44-year-old woman with a rash on her fingers complains that the digits feel swollen and tight; the eruption is otherwise asymptomatic. The patient does a great deal of housecleaning but denies exposure to new soaps or detergents.
What do you suspect?
A. Contact dermatitis.
B. Atopic dermatitis.
C. Asteatotic eczema.
D. Lupus erythematosus.
To confirm your diagnosis, you . . .
F. Perform a patch test.
G. Determine antinuclear antibody levels.
H. Determine Scl-70 antibody titer.
I. Perform a potassium hydroxide(Drug information on potassium hydroxide) evaluation.
J. Initiate a trial of a topical corticosteroid.