Re: Allergy shot injection site reaction...help?
Heating and massaging the site sounds like funny advice to me. Might make the irritation worse.
I use ice rather than heat, because when I get the lumps from allergy shots, they tend to be red and warm. Ice helps a lot with the itching.
I get three shots a week, and once I reached the higher doses, I started getting injection-site reactions pretty much every time. Taking an antihistamine beforehand can help, as can icing after. It's annoying but harmless, and I've never had a systemic reaction.