Clinical Challenge: A Papular Rash on the Scalp

A 31-year-old man presents to a homeless clinic complaining of a papular rash located on the occipital region of his scalp. The rash began several years earlier but improved without the use of any particular treatment. He noticed a return of similar lesions several weeks ago. He says that the lesions are increasing in number and are mildly pruritic. He ...