Psoriasis causes thick patches of skin called plaques that are dry and flaky. Dandruff usually comes and goes and can be caused by oily hair or irritants. Psoriasis is a chronic autoimmune disease and ...

Elbow psoriasis is a chronic skin condition that causes areas of thickened, inflamed, red skin on your elbows. It can also develop on other parts of your body, like your scalp or knees. It’s thought ...