See a doctor: Psoriasis causes cells to build up rapidly on the surface of the skin, forming thick silvery scales and itchy, dry, red patches that are sometimes painful.Dandruff is a common chronic scalp condition marked by itching and flaking of the skin on your scalp. Seborrheic dermatitis is a common skin disorder that mainly affects your scalp, causing scaly, itchy, red skin and stubborn dandruff.
Answered 12/7/2016
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