Thanks for writing in.
could be urticarial rash,papular urticaria etc.
Antihistaminic tablet like zyncet should be started on twice daily.You can apply calamine
lotion over the affected skin twice daily.
This will help in resolving the rash.
A visit to pediatrician
would be required for confirmation of diagnosis and prescription drugs.
Hope this helps.
I will be available for follow up.