Hello thanks for using Health Care magic
I would be pleased to answer your question .
I suggest you should take a better anti histamine
180 mg in the morning and Claritine 5 mg at night . I suggest you to take the treatments for a period for 10 days . this will slowly help in reducing the new rashes from developing .
Thanks and take care . there is no need to take steroids
presently , however if you get symptoms like breathing difficulties , lip or eyelid swelling intake of a steroid would be mandatory .
You can visit a Dermatologist
if your condition does not improve after 10 days .
Thanks and take care