Endometriosis is a painful and often debilitating disease that affects an estimated 6.5 million women in the U.S. Now, one researcher is using her own struggle to bring hope to millions by developing an at-home test for the disease.

One in 10 women are diagnosed with endometriosis, a chronic and usually debilitating condition that can be easily misdiagnosed.

Endometriosis is a condition that happens when tissue similar to the lining of the uterus grows outside of the uterus. Researchers don’t know exactly what causes the painful condition, but a new study is shedding light.