Ostraceous Psoriasis

The answer to yesterdays Medical Challenge is #3: Ostraceous psoriasis. That was a stumper, but some of you got it. Of course, the dermatologist knew!Psoriasis can present with many different appearances. It is a common, recurrent immune mediated disease of the skin and joints. It is found worldwide and has a strong genetic component. The scaling papules and plaques are circular with grey