When to Get a Doc's Opinion If you've noticed that your scalp is especially dry or sensitive, you should discuss it with your dermatologist -- it could be a sign of something more serious. "If you're noticing white flakes and it's itchy all the time, then it's probably dandruff," says Fusco. "[But] if your symptoms are severe, it could be psoriasis." While there's no prescription for dry scalp, a dermatologist can suggest a medical treatment for psoriasis.
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