Chronic pain is persistent pain that lasts for weeks, months, or even years, typically beyond the normal healing time of an injury or illness. It can result from conditions like arthritis, nerve damage, fibromyalgia, or past injuries, but sometimes the cause is unknown. Unlike acute pain, which serves as a warning signal for injury, chronic pain can persist even after the initial cause has healed. It can affect daily life, mental health, and overall well-being, often requiring a combination of treatments like medication, physical therapy, and lifestyle changes to manage.