2 doctors weighed in:
I noticed a bump in armpit 2 days ago.Size 1cm x 1cm, felt tender . Today I got my period, and bump has shrunk, no tenderness. Is it hormones?See doc?
2 doctors weighed in

Dr. Colin Kerr
Family Medicine
1 doctor agrees
In brief: Lump in arm pit
Most of these kind of lumps in your arm pits represent blocked sweat glands, which can occur randomly in anyone.
As long as they go away by themselves in 2-3 weeks, there is no special concern. These glands are sensitive to hormones (increased sweating), but the hormones are not really the cause. The cause is obstruction or blockage of the normal duct from the pore.

In brief: Lump in arm pit
Most of these kind of lumps in your arm pits represent blocked sweat glands, which can occur randomly in anyone.
As long as they go away by themselves in 2-3 weeks, there is no special concern. These glands are sensitive to hormones (increased sweating), but the hormones are not really the cause. The cause is obstruction or blockage of the normal duct from the pore.
Dr. Colin Kerr
Dr. Colin Kerr
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