Case Summary and Diagnostic Information

This is a 44-year-old African-American male who first presented to his physician for a skin problem and scaling of the scalp.  The skin problem was diagnosed as psoriasiform dermatitis and was treated with desonide 0.05% ointment twice a day.  For the scalp scaling, he was using ketoconazole 2% and selenium sulfide shampoos on a regular basis. 

	History of Present Illness
	Medical History
	Clinical and Radiographic Findings
	Excisional Biopsy

 After you have finished reviewing the available diagnostic information, make the diagnosis.