Accepted Answer

OK.

There probably are two possibilities here.

The most likely possibility is that you are just having an inflammatory response to the injected vaccine into the arm.

Up to 10% of people develop this type of reaction, which is pain and swelling around the injection site. It is not an "allergy", just your body's reaction to it. People can also develop a fever after getting the injection as well.

The fact that the pain started to occur 6 hours after the injection fits right into the time course of this type of reaction (6-8 hours after injection).

The fact that you aren't having and swelling in the neck or breathing problems is good. Putting a cold washcloth over the area, and taking advil can help with this reaction. It should improve within a couple of days.

The other possibility, of pain radiating in this area down the arm and to the neck is a pinched nerve in the neck. Unlikely, given the time course of the injection and pain, but should your pains not improve within a few days, this may be a possibility.

Expert:	Dr. Mark
Pos. Feedback:	99.8 %
Accepts:
Answered:	10/24/2009

Doctor (MD)

U.S. Physician/Surgeon in Neurosurgery