It commonly affects children, but adults can also develop ... Psoriasis is a skin condition that causes a thick, scaly rash on certain body parts, including elbows, knees, and scalp.
It's similar to an autoimmune disease, which causes your immune system to attack your body's healthy tissues. Muscle weakness and a skin rash are the ... 15 years old and adults from 40 to ...
It can be bright red on lighter skin tones and not as noticeable on darker ones. The rash may later spread to the arms, legs, and torso. Adults may get joint pain and swelling. Most cases of fifth ...