Pain can be throbbing, aching, or sharp, and it can be occasional or constant. It all depends on what’s causing the pain. The uncomfortable sensation is a red flag, though, a warning to you that ...

Medically reviewed by Theresa Marko, PT, DPT, MS Key Takeaways Armpit pain can come from injuries, infections, or swollen lymph nodes.  To diagnose armpit pain, doctors may use lab tests, physical ...