I have a bump under my arm near the armpit. At first I thought it was a zit and tried to pop it. Nothing happened except it is really sore now. It is tender to even wear clothing. There is now a red oval shape around it. Any suggestions on what it might be?
Hi. With the history you have provided this looks to be an abscess. Get an antibiotic and anti-inflammatory medicine cover for 3 to 5 days. It may rupture and settle or may need an incision and Chat Doctor.