I m 14years old,my health is so low and height is so less 4ft 11inch only. when ihad loose motions, then i eat medicine,but it reactions on me-my lips turns into black,my body has too hot itching,I got some red n brown types mark on my body specially where itchs too much .when i avoid loose motion medicines its not anymore but itching is still What I have to do for stop itching while I suffering loose motions