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Lewisville, TX
A 38-year-old female asked:

I had an injection (i believe it was an allergy shot) several years ago and i still have a hard nodule that hurts and itches, and has flare ups. ?

1 doctor answer1 doctor weighed in
Dr. John Chiu
Allergy and Immunology 57 years experience
Unusual: Although allergy shots not uncommonly induce a delayed swelling at the site, it is unusual for the reaction to stay for >a week . I suspect your problem is from repeated scratching causing a nodule (prurigo nodularis) which often responds to cortisone injection directly into the lesion.

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Last updated Oct 6, 2016

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