A patient presents to your clinic with this rash on her arm.  She reports that it began three days ago and has steadily gotten worse.  Now, the rash is weeping and crusting a little bit.  It hurts and itches.

She has been in jail for around 6 weeks.  Her only other visits to the medical clinic in that time were for “Athlete’s Foot,” for which she was treated with anti-fungal cream, and depression for which she was prescribed citalopram.  She is on no other medications.

What is it? Continue reading →