Never pop a burn blister. Get professional advice. A boil may appear to be a nasty pimple, but it's actually the result of staph bacteria that have invaded a blocked hair follicle or oil gland and infected it. The bacteria, along with white blood cells and dead skin cells that accumulate at the site, form pus and cause swelling. Boils generally appear on the face, neck, scalp, buttocks, armpits or sometimes on a woman's nipple.
Boils are common ailments, and usually minor ones.
However, they can be painful and may indicate a more serious condition. You have a boil on your face, a cluster of boils or, particularly, boils accompanied by a fever. You could develop a more serious infection. You get boils frequently. Your doctor will want to find out what is causing them.