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A member asked:

Nocturnal left arm pain with a lump in the arm pit?

A doctor has provided 1 answer

Infection?: A lump in the armpit can be caused by several different things, one of which is infection. Do you notice lumps anywhere else on your body, particularly your neck or groin? Do you have any skin rashes or changes on your arm? Given your age, other causes of this lump and pain, although possible, are less likely.

Answered 4/16/2014

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