Endometriosis can elude diagnosis for years. What to know about the disease and new ways to find it

When Zoë Armstrong got an ultrasound report showing signs of endometriosis, she called her mom and cried. After years of suffering and seeking help from doctors, she finally had an answer.“To see it on paper, I was like, ‘I’m not crazy,’” the 31-year-old recalled. “I very much knew what I was feeling in my own body.”Armstrong’s experience is not unusual. The American College of Obstetricians & Gynecologists says people can wait a decade or more after the onset of symptoms to receive a diagnosis of endometriosis. The painful condition, which causes tissue similar to the lining of the uterus to grow on other parts of the body, afflicts 1 in 10 women worldwide.New tests being used in other countries aim to help address the issue. And while they’re raising hopes among doctors and patients, the