A 20-year-old male presents with severe itching on his scalp accompanied by flaking and redness. He has tried multiple dandruff shampoos but has found no relief. What could be the cause of his symptoms, and how can they be managed?
The patient's symptoms are suggestive of seborrheic dermatitis, a type of eczema that typically affects sebum-rich areas like the scalp. Treatment typically involves medicated shampoos containing agents such as ketoconazole, zinc pyrithione, or selenium sulfide. If the scalp eczema is severe, a short course of a low-potency topical steroid may also be necessary.