People with darker skin are more likely to find psoriasis lesions on the scalp, elbows, knees, torso, buttocks, and even nails. Affected areas can also vary in size. If you have scalp psoriasis ...

Scalp Psoriasis vs. Dandruff: What’s the Difference? This article was reviewed by Knox Beasley, MD. If you’re experiencing a flaking, itching scalp, you may do a quick self-diagnosis of dandruff.