'welcome to healthcaremagic forum
it look like allergic dermatitis
rarely occur in generalize fashion and in such way
linical is calamine
lotion and may cause dryness and increase problem
use good moisturizer first and than apply linical lotion .
in non responsive case steroid
in high dose for short period may be use
avoid oily ,spicy and outside food
going in new environment may increase it
use moisturizer bar only
wear full and cotton cloths .
i hope i have answered your question.