Q. How can allergic reactions cause an armpit lump?
Doctor Answer is medically reviewed by SecondMedic medical review team.
Allergic reactions can cause an armpit lump, also known as a localized allergic reaction or a “delayed-type hypersensitivity” reaction. The lump is usually caused by the body's response to an allergen such as pollen, mold spores, dust mites or pet dander. When these allergens come in contact with the skin in the area of your armpit, they trigger an immune response which results in inflammation and increased blood flow to the affected area. This leads to swelling and the formation of a painful lump under your arm.
The symptoms associated with this condition include redness, itchiness and tenderness around or near your armpit. In some cases, you may find that there's also a raised appearance on your skin as well as fluid accumulation (called edema). Additionally, when touched it may be warm to touch and feel hard due to inflammation.
If left untreated for too long then severe pain can develop and more severe complications can occur including infection; however this is quite rare but should not be taken lightly if it occurs since it can quickly become life threatening if not treated correctly.
Treating localized allergic reactions generally involves identifying what might have triggered the reaction and avoiding further exposure whenever possible; additionally antihistamines are often prescribed (orally or topically) to help reduce inflammation which would help alleviate any pain/symptoms associated with it. Additionally corticosteroid creams/ointments are sometimes used for short periods of time to help decrease inflammation quickly if necessary so that further discomfort/progression doesn't take place alongside other treatments being administered also including topical immunosuppressant like tacrolimus cream etc., depending on severity of case & availability from doctor's prescription or over counter medications – always consult your physician before starting treatment & self-medication!
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