A breast cyst usually feels like a grape or a water-filled balloon, but sometimes a breast cyst feels firm. Breast cysts don't require treatment unless a cyst is large and painful or uncomfortable. In that case, draining the fluid from a breast cyst can ease symptoms.
Cysts develop when the protein is trapped below the skin because of disruption to the skin or to a hair follicle. These cysts often develop in response to skin trauma, HPV infection, acne, or excessive exposure to the sun. An epidermoid cyst is more likely to develop in people with acne or other skin conditions.
A cyst becomes a problem when it doesn’t go away or gets bigger. It can become painful. There’s also the possibility of cancer, but it’s rare. The chances go up as you get older. What Are the Symptoms? Most ovarian cysts are small and don’t cause any problems.