Hi, my little boy who is 6< has a red spotty rash all over his body and for some reason his left ankle is hurting, not sure whether it would be connected, he is fine in himself just seems to have a red spotty itchy rash everywhere, pharmacist thinks its an allergic reaction and gave me piriton, some have gone from his back but he now seemsto have got more in other places, do u think this is the case that it is an allergic reaction?