Why does endometriosis only cause major pain for some?

New research may help explain why some patients endometriosis experience debilitating pain while others do not have symptoms.

One of the puzzling aspects of endometriosis—a gynecologic condition in which tissue similar to that lining the uterus grows outside of it—is that the extent of the disease doesn’t determine the severity of its symptoms.

To learn more about how endometriosis causes pain at the molecular level, Yale School of Medicine res...