I've been having a burning pain in my left armpit for the past two weeks. I recently had a breast ultrasound that showed enlarged lymph nodes in both armpits and a cyst in one breast. The doctor said that can't be the cause of the burning, but I'm still concerned. A few weeks ago, I had some redness and irritation in the same armpit from a perfume, but that cleared up. There's no burning in my right armpit, and there's no visible patch in the left one. Any ideas on what could be causing this burning pain?

This could be due to irritation from the previous reaction to perfume or other underlying causes. I recommend taking an over-the-counter anti-inflammatory medication like ibuprofen to help with the pain and inflammation. Additionally, applying a topical pain relief cream containing lidocaine may provide some relief. If the pain persists, you may need a prescription for a medication like gabapentin to help with nerve pain. Make sure to follow up with your doctor for further evaluation and management.