A worsening rash with a malodor

The patient is a 19-year-old woman who presents with several years of a worsening rash. The rash appears as erythematous, hyperkeratotic thin plaques in a seborrheic distribution. The patient states that the rash is very irritating and sometimes pruritic. The patient's main complaint is that the rash exudes a malodor. The patient states that her father has a similar rash ...