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Knot under arm pit

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i recently had a knot that was sore and about the size of a bb come up under my arm pit after 1 wk it went away now the same size of knot that is sore and hurts came up again and another one that is smaller appear today can you tell me what it is ?

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replied November 15th, 2009
Womens Conditions Answer A7900
Hi, and thanks for your medical question on eHealth's Ask a Doctor forum.

A knot in your armpit that is also painful can be due to a boil or folliculitis (hair follicle infection). Usually it responds to local and oral antibiotic and anti-inflammatory drugs.

However in females for any armpit swelling one must also examine the breast to see if there are any lumps in the breast. In such a case the arm pit swelling could be a swollen lymph node. Hope this helps. Take care!

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