My husband has suddenly developed a very itchy red pinhead rash all over his body. It s on his legs, buttocks, public area, torso, arms, face and in his armpits. He also has itchy watering eyes, a runny nose & sore throat. He has not taken any new medications. Not eaten anything new. No change in washing powder, deodorant etc.. i have given him chlorphenamine tablet. Any advice pledge.