Scalp psoriasis is a common condition that causes dry, itchy, and scaly skin plaques. Learn about the symptoms, causes, treatments, and more., Psoriasis is a skin disease that causes a rash with itchy, scaly patches, most commonly on the knees, elbows, trunk and scalp., What causes scalp psoriasis? Regardless of where psoriasis forms, the cause is the same. Psoriasis develops when a person’s immune system has faulty signals that tell skin cells to grow too quickly. New skin cells form in days rather than weeks. The body does not shed these excess skin cells., Scalp psoriasis is a common but often frustrating skin condition that can cause itching, flaking, and discomfort. It results from an overactive immune response that leads to rapid skin cell turnover. While scalp psoriasis can be persistent, various treatments — including prescription medications and over-the-counter options — can help manage symptoms and reduce flare-ups. What is scalp , Scalp psoriasis can cause crusty patches or scales on the surface of the head. Find details about medicated shampoos, prescription treatments, and biologics., Psoriasis is a chronic autoimmune condition that causes red, scaly, thick, and flaky skin. Psoriasis of the scalp occurs in about half of all people who have psoriasis. All forms of psoriasis, including scalp psoriasis, are caused by an overactive immune system, but the reason for this immune system overactivity is not known..