Endometriosis is a condition that most women have heard of, yet few truly understand the implications of the disease. The symptoms are often dismissed, and many women spend years trying to get diagnosed and treated.

This condition is extremely complex and can affect anyone, including celebrities. Some of these well-known names have been very active in raising awareness and spreading the word about endometriosis.

Here are some of the most famous women living with the disease:

MORE: Seven things only women with endometriosis will understand

1. Susan Sarandon
The actress is one of the most active celebrities when it comes to speaking out about endometriosis. She’s shared a lot about her personal experience with the disease, including that she was misdiagnosed several times, that many doctors didn’t believe she was sick and that many people thought she was imagining her problem.