| Chronic cancer pain | Can be caused by tumour pressing on bones, nerves or other organs. Some chemotherapy drugs and radiotherapy can also cause the pain. |
| Inflammatory pain | Caused by swelling or inflammation from conditions such as a sprained ankle or osteoarthritis. |
| Migraine | A particularly debilitating type of mostly head pain that can last for hours or days. Its cause is usually unknown. |
| Neuropathic pain | Develops from an injury to a nerve or group of nerves. May be difficult to alleviate. |
| Nociceptive pain | Typically triggered by a mild headache, burn, cut, bump or bruise, surgery or bone fracture. Generally gets better by itself as the healing takes place. |
