Hi, yesterday I noticed a painful lump on the inside of my upper arm. It is painful and I know I did not injure it. It is not bruised. It is about the size of a jelly bean and my arm hurts when I use it. It came on so suddenly that I am wondering what caused it. Is this normal?
Hi. Thanks for your query. Noted your history of sudden pain and swelling in the inner part of upper arm, occurred without any obvious injury, is of the size of a jelly bean, and the pain increase on using the arm. The most probable cause in such a case is a small abscess from a boil. There would also be redness and local tenderness. I would advise you to consult a Doctor as you need a clinical evaluation, examination and most important the prescription for an antibiotic and anti-inflammatory and painkiller medicines.