Hi, my little one, she s 2, was prescribed flucloxacillin today. She s got very bad skin rash, it looks like small ulcers and complaints that it hurts and is itchy. Her brother just had chicken pox.. Could she have very bad skin reaction to chicken pox? She has no spots yet only this strange skin reaction and a bit of temperature, apart from that she s full of beans, eating and drinking normally. Please advise