Two conditions can cause flaky, itchy scalp: psoriasis and seborrheic dermatitis. Psoriasis is a chronic autoimmune disease that causes an immune response that results in a rapid growth and buildup of new skin cells. Psoriasis may appear on any part of the body, though the lesions most commonly develop on the elbows, hands, feet, knees, and scalp. Seborrheic dermatitis, on the other hand, is a skin condition that causes scaling and itchiness on the scalp and face. Seborrheic dermatitis is also commonly known as...

Psoriasis is an autoimmune disorder that results in red, inflamed, and scaly patches on the skin. Psoriasis can affect anyone, and about 7 million people in the United States have psoriasis. Psoriasis is not a contagious disease, but the exact cause of the condition is still a bit of a mystery. Although psoriasis does not have a cure, there are many treatment options available to lessen its symptoms and improve people’s quality of life. While psoriasis patches or lesions may appear on any part...