Chronic pain refers to pain that has been continuous for a minimum of 12 weeks and can last several weeks but can also be ongoing over the span of months and even years. In severe cases, it will limit your mobility as well as reduce your strength, endurance, and flexibility. Daily tasks and activities become challenging, if not impossible, for people who suffer from severe chronic pain. Chronic pain can manifest itself in many different forms over any part of your body. The pain can be dull or sharp and can feel like an aching sensation or a burning sensation. Chronic pain can be a constant feeling or can come and go with no apparent rhythm or reasoning. Different regions of the body can experience pain in different ways. Some common types of chronic pain can include headaches, lower back pain, arthritis pain, post-trauma pain, postsurgical pain, cancer pain, neurogenic pain, and psychogenic pain. Chronic pain is the most common cause of in the United States for long-term disability.