NO SERIOUS SIDE EFFECTS, DONT WORRY
Hello and welcome.
Hot ears is a purely circulation issue and doesn't indicate an allergic response
. It resolves with time if its bothersome, you can take tab propranolol
which is a beta blocker
in low dose for it after consulting your doctor.
Topical creams have no systemic side effects ,only local. Benadryl has mainly CNS side effects
sedation , confusion, dizziness, pharyngeal dryness, tachycardia
let me know if you have any other query if not, please close the discussion and rate my answer.
have a nice day