What type of outbreak is this?

Case 1: For several months, a 68-year-old man has had a highly pruritic rash on his lower legs. A similar rash recently arose on his trunk and arms. Treatment with a corticosteroid cream has been ineffective. The patient has diet-controlled diabetes and hypertension that is well controlled by medication.

What type of outbreak is this?

A. Psoriasis.
B. Stasis dermatitis with id reaction.
C. Contact dermatitis.
D. Adverse drug reaction.
E.Asteatotic eczema.

Case 1: This patient has stasis dermatitis with id reaction, B. After he was treated for 3 weeks with a diuretic and support hose, the rash started to resolve. Id reactions are a poorly understood phenomenon most commonly associated with tinea pedis, but they have also been reported in conjunction with other conditions.

The distribution of the patient's rash excludes psoriasis. Contact dermatitis is possible, although the distribution does not suggest any particular culprit. Patch testing would be a reasonable option. An adverse drug reaction typically presents as a widespread erythematous maculopapular eruption. Asteatotic eczema usually occurs above the legs and responds to moisturizers and topical corticosteroids.