Probably not: This appears to be a contact allergy or irritant reaction and as such an antihistamine would not likely do anything. Avoidance of the contact agent and a topical cortisone cream may help. In the future, attaching a photo of the rash may help us answer your question more accurately.
Answered 12/20/2020
4.9k views
Unknown rash on hand: Not sure what you mean by a heat rash. Other than hives and urticaria i don't know of a rash that will benefit much from antihistamines. You may need to get someone to take a look and make a diagnosis to choose an effective therapy. Make an appointment with a physician if it is chronic or recurrent. If it is mild consider a topical Hydrocortisone cream otc.
Answered 10/20/2016
4.9k views
2 doctors weighed in across 2 answers
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