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 will appear in 70% to 80% of people infected with Lyme disease. The rash will emerge three to 30 days after the tick bite, with an average appearance time of about seven days. Erythema migrans can ...