Common symptoms of mono include fatigue, fever, sore throat, headache, body aches, and swollen lymph nodes in the neck and ...

Cysts (fluid-filled tissue pockets), infections, and swollen lymph nodes commonly cause armpit lumps. Finding a lump in your armpit can be worrisome, especially if it hurts or appears unexpectedly.

Pain under the left armpit may result from muscle damage or swollen lymph nodes due to an infection. However, it can also indicate a more serious problem, such as cancer or angina. The armpit is a ...

Cancer Research UK lists “a new lump” or “thickening” in the armpit as a sign to look out for. This can be caused by a swelling in the lymph nodes. READ MORE: Pensioners risk losing payments if they ...