Persistent pain is deemed chronic when it has lasted more than 3 months, or more than its normal healing time. Chronic pain is a complex condition and experienced by everyone differently. There are many different causes of chronic pain, including an injury that is not healing properly, an illness like cancer or arthritis, or some people experience chronic pain with no evidence of illness or injury. The most common forms of chronic pain include Arthritis and joint pain, back pain and neck pain.
