Thank you for your query.
I think your child is suffering from some form of atopic dermatitis
:that is allergy
of the skin.She should avoid all types of irritants to the skin including,oils,dusts,mites,pollens,creams and ointments
.Her skin should be well hydrated and she should use a daily cleanser and a good quality moisturizer.She should use a syndet containing soap.Review by a skin specialist is warranted.Hope this answers your query.Wishing your child a speedy recovery.Have a nice day.