welcome to healthcare magic forum
thank you for your query
it look like atopic dermatitis
or eczematous dermatitis.
is sometimes not effective so we have to go for higher one
in severe case oral steroid
also given by the doctor .
apply good moisturizer lotion over the body .
use warm water to bath and wear cotton cloths
drink more water and avoid sun exposure .
better to consult dermatologist
if it not improve
i hope i answered your question