More than 30% of women who give birth by cesarean section suffer from long-term symptoms, such as abdominal pain, blood loss or fertility problems. These symptoms are caused by an abnormal uterine scar. This condition is defined now for the first time, thanks to an international study led by Amsterdam UMC, as Cesarean Scar Disorder (CSDi). This gives women recognition for these problems after a cesarean section. In addition, international studies on CSDi can now be better compared with each other, providing more insight into treatment options. The research is published today in JAMA Network Open.