Chronic pain can be defined as any pain that persists for 3 months or longer and while not necessarily maladaptive, it often leads to physical decline, limited functional ability and emotional distress. Chronic pain differs from acute pain, a normal sensation that alerts us to possible injury, as chronic pain persists and may arise from an initial injury such as a back sprain or an ongoing cause such as illness. However, there may also be no clear cause. Other health problems such as fatigue, sleep disturbance, decreased appetite, and mood changes often accompany chronic pain. Chronic pain may limit a person’s movements, which can reduce flexibility, strength, and stamina. This difficulty in carrying out important and enjoyable activities can lead to disability and despair. When pain persists in spite of medical treatment, as is the case in chronic pain syndromes, the issues become even more complex.