Hi Dear,
Welcome to HCM.
Understanding your concern.
Thanks for your query . The lump you mention under your arm cam occur due to many reasons like swollen lymph node . lipoma ,
allergic reaction or non cancerous fibroedenoma. In case of women painful lump under arms can be alarming , because it can be sign of
breast cancer , but the chances are rare .
I would suggest you to
consult doctor for proper examination and to find out the exact cause. Doctor may order
blood test for infection , examin by palpation te determine consistency of lump, X-ray or biopsy .
Doctor may prescribe antibiotics for swollen lymph node or infection , anti viral in case of viral infection or may recommend chemo therapy , radiation therapy or surgery in case of any growth .
For now give warm compresses to affected area several times a day take ibuprofen (if not allergic ) or
acetaminophen for pain and swelling and take over the counter antihistamine drug like benadryl .
Hope your concern has been resolved.
Get Well Soon.
Best Wishes,
Dr. Harry Maheshwari