*Seborrheic dermatitis, presenting as '''erythematous, pruritic plaques with greasy scale on the scalp, central face, and ears''' is associated with Parkinson disease and HIV and is treated with selenium sulfide or ketoconazole shampoos. | *Seborrheic dermatitis, presenting as '''erythematous, pruritic plaques with greasy scale on the scalp, central face, and ears''' is associated with Parkinson disease and HIV and is treated with selenium sulfide or ketoconazole shampoos. |