A sebaceous cyst—also known as a steatocystoma—is a fluid-filled bump under your skin that develops when the sebaceous (oil) glands in your hair follicles become blocked. These cysts are ...

I had one removed from my head when I was about eight-years-old and didn't have another until two years ago. Now I have three that have come up on my head beneath my hair.

Ovarian cysts are sacs or pockets of fluid that form on the ovaries. There are two types of cysts: simple and complex. These are fluid-filled cysts that have no solid features. They are often either a ...

If an ovarian cyst is left untreated, it will usually resolve on its own. However, a solid or partially solid cyst may need to be evaluated by a lab to make sure it isn’t cancerous. While most ovarian ...