Allergy shot consistanly in left arm, now c/o left arm muscle pain and hand cramp in l hand an arm?

Time for Neurologist: These are such unusual symptoms that have followed allergy shots, so one should be cautious about blaming the injections on these new problems. Any injury to the body may cause a condition known as reflex sympathetic dystrophy/crps complex regional pain syndrome, but it is hard to imagine that allergy shots could bring on such a complication. Please arrange to see a neurologist now for workup.

Ask your allergist: Your allergist needs to know about this and any other reaction you may have. Depending on your immunotherapy prescription, pain can come from having too high a glycerin content in your vials, and may go away if they are made more dilute. Unless you've had a mastectomy or other procedure that affects lymph drainage from the right arm, you should alternate arms between injections.