Neuraxial Labor Analgesia and Offspring Neurodevelopment

This study is following children born to mothers who did or did not use epidural pain relief during labour, to see whether this type of pain management affects the child's brain development in the years after birth. **You may be eligible if...** - You are a first-time mother between 18 and 35 years old - You are carrying a single baby at full term (head-down position) - You are planning to deliver vaginally - You receive regular prenatal care at one of the study centers **You may NOT be eligible if...** - You have a history of psychiatric illness diagnosed before or during pregnancy - You have a condition affecting the pituitary gland or adrenal glands - You have a medical reason that makes epidural anaesthesia unsafe (such as a history of spinal infection, spinal disease, systemic infection, or skin infection at the injection site) Talk to your doctor to see if this trial is right for you.