My 2 year old has all of a sudden started to hate the bath and I think it's because he has a sensitive scalp? I usually just wash his hair with water and every so often will use shampoo. He screams bloody murder but after he's had it washed seems happier. I'm wondering if it's itchy or sensitive or both? He had bad cradle cap as a baby and I can still see some even though he has thick hair. Any advice as to what I could do?