Acute Pain: Fracture (broken bone) after an accident, cutting yourself, car accident, burns, pain after an operation, tooth removal

Chronic pain: Continued scar pain after an operation or accident, osteoarthritic pain (e.g. knee / hip pain), ongoing low back pain, widespread chronic pain (e.g. Fibromyalgia), Post-herpetic neuralgia, central pain (e.g. after a stroke), complex regional pain syndrome, any acute pain that lasts longer than 6 months