What is seborrheic dermatitis?
A person with seborrheic dermatitis has inflammation of the skin over the scalp, ears, or face, which results in a rash. The cause of seborrheic dermatitis is unknown.

What are the symptoms of seborrheic dermatitis?
The main symptom of seborrheic dermatitis includes an itchy rash that is located on the scalp, ears, face, or upper chest. The rash may include skin redness, flaking, swelling, scaling, and peeling. Skin blisters may form on the surface. Rarely, the rash also occurs on the genitals.

How does the doctor treat seborrheic dermatitis?
Treatment for seborrheic dermatitis may include corticosteroid cream, dandruff shampoo, antifungal cream or shampoo, and oral antihistamines for itching.