Endometriosis is a chronic condition where uterine-like tissue grows outside the uterus, affecting women of various ages and often resulting in painful symptoms and complications, including infertility. The condition is typically diagnosed years after the onset of symptoms, frequently following fertility issues, and is associated with hormonal influences and immune system dysfunction. Despite its prevalence, the causes remain uncertain, and understanding is further complicated by frequent misdiagnoses and delays in obtaining a proper diagnosis.