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 ...

Medically reviewed by Casey Gallagher, MD Key Takeaways Armpit rashes can be caused by allergic reactions to deodorants or shaving creams.Keeping the area clean and avoiding shaving helps treat mild ...