The only way to know if you have cancerous lymph nodes, however, is for a healthcare provider to do a biopsy. Can deodorant cause lumps under the armpit? Deodorant doesn't cause lumps in the armpit.

"I'd been wondering what that was." I was stunned she'd noticed. To me, the lump growing under my armpit for the last two years was something only I could see. To her, it was an enviable third breast.

People have been urged to lookout for an unusual sign in the armpit that could signal the UK’s most common cancer. According ...

The NHS says most lumps are “harmless” ― but they ... in a circular motion all the way up to your collarbone and under each ...