Medically reviewed by Katlein Franca, MD When psoriasis affects the scalp, it causes thick, silvery-white or gray scales that may be inflamed and itchy. You may also feel burning or other discomfort.

Medically reviewed by Susan Bard, MD Rosacea, psoriasis, and eczema share some symptoms, such as rashes, bumps, redness, and itching. However, they are different conditions, though it is possible to ...