What can cause a lump to form in the armpit?

Patient : What is the most likely cause for a red, painful, and fairly solid lump in the underarm?
Symptoms:  Lump in armpit that is red, painful and fairly solid. It is also sometimes warm to the touch.
Doctor :   Thank you for question. It is possible that this swelling is an infected sebaceous cyst. This is caused when a sebaceous gland in the armpit is occluded. Bacteria begin to proliferate in this gland leading to swelling with pus, inflammation and pain. You will likely need to be prescribed a course of antibiotics to treat this cyst, and if it is rather large, it may need to be drained by your doctor. Please have your doctor evaluate this swelling and treat you with antibiotics if necessary. Thank you for consulting AskTheDoctor.com

Related Q&A

Q: My wife had an MRI of her brain today. It indicated chronic small vessel ischemic changes. What can she do moving for...

Q: Hi I just had a benign tubulovillous adenoma (over 1 cm ) in my rectum removed.It was recommended that I get another ...

Q: Hi, I am a woman of 60 and I suffer from Ringworm of the scalp caused by Microsporum Canis. I live in the country wh...

Q: I have seen two general practitioners asking them about ED which I have noticed since about 8 months ago.38 yr old ma...

Q: I’m a 57 y/o reasonable fit female who has Bradyarrhythmia (heartbeat less than 40bpm. Should I be exercising?

 
DOCTOR ADVISORY BOARD
218

Dr. James Obaji M.D.

  • 247 Reviews
  • Family Physician
173

Dr. Suneel Sharman M.D.

  • 190 Reviews
  • Family Physician
138

Dr. Pat Golden M.D.

  • 169 Reviews
  • Cardiologist
98

Dr. Kunaal Jindal M.D.

  • 112 Reviews
  • Plastic Surgeon
CNN
BBC
MSNBC
CBS
abcNews
FoxNews