My 5 yr old daughter is getting itchy hives about her body chest area at night after her shower any suggestions?

Find the cause: If your daughter is getting hives after she showers every night, in the same body area, then that suggests that something she is using in or after the shower is causing this reaction. Soap? Lotion? Cream? Perfume? Find that substance to which the skin is being exposed, remove it, and see if the hives stop.

Aquagenic: Urticaria can be treated by predosing with antihistamines.