Hi I will advise you to treat your pain in armpit and breast by Eliminate an underlying cause or aggravating factor. This may involve a simple adjustment, such as wearing a bra with extra support. Use a topical nonsteroidal anti-inflammatory (NSAID) medication. You may need to use NSAIDs when your pain is intense. Your doctor may recommend you apply an NSAID cream directly to the area where you feel pain. Adjust birth control pills. If you take birth control pills, skipping the pill-free week or switching birth control methods may help breast pain symptoms. But don t try this without your doctor s advice. Reduce the dose of menopausal hormone therapy. You might consider lowering the dose of menopausal hormone therapy or stopping it entirely. Take a prescription medication. Danazol is the only prescription medication approved by the Food and Drug Administration for treating breast pain and tenderness. However, danazol carries the risk of potentially severe side effects, such as acne, weight gain and voice changes, which limit its use. Tamoxifen, a prescription medication for breast cancer treatment and prevention, may be recommended for some women, but this drug also carries the potential for side effects that may be more bothersome than the breast pain itself. Regards DR DE