A 33-year-old woman presents with dry, red, scaly patches of skin over the elbows and knees. These have come on gradually over the years and are asymptomatic. She also has dandruff.

This has recently become much worse and is causing her great embarrassment. What is the differential diagnosis? *This case is from Docplexus editorial team for educative purpose only Source: Core clinical cases in medical and surgical specialties Stay connected, the answer will be posted in next 48 hrs!