A painful pimple on the breast that looks like a small bump is often a sign of an infected Montgomery gland, especially when it appears on the areola or around the nipple. Montgomery glands are small oil-producing glands found on the areola, which is the darker area around the nipple.
If an infected Montgomery gland is suspected, it is best to see an OB-GYN or primary care provider for an evaluation. Treatment may involve antibiotics, and in some cases, the gland may need to be drained.
A pimple on the breast or any bump around the nipple should not be squeezed. Squeezing can push more bacteria into the skin and make an existing infection or inflammation worse.