Thanks for posting on HCM
If you are having reddish itchy hives on your body then it is most likely urticaria
(allergic skin reaction). Chicken pox
presents with reddish papula rashes distributed all over the body.
If you are taking benadryl
which is an antihistamine well indicated for the allergic reactions, I propose that you should be placed on start dose of an injectable steroid
then continue with oral cortisteroid for 2-3 days. If no improvement then consult with a dermatologist
to determine the cause of the hives as they can be an underlying diseases that will need to be investigated and treated. If rashes are not too diffused, local steroid treatment will need to be included. Continue with the benadryl.
Hope this helps