& year old scraped spine on a slide shortly after got a mesquito bite...I put itch help stuff on it for him several days ago...Yesterday he was expressing tenderness with anything touching his back. When I looked and area the size of my palm was hard red and heated...I heated a needle and relieved the pressure it flows with pus...I put a poultice on it..It is WAY better today about the size of a quarter, slightly hard and raised...He know is having fever and headache...