Most people in the United States will experience back pain in their lives. Back pain is the second most common reason that patients go to the doctor and a very common reason that people miss work. Back pain can originate from the many parts of the back: the muscles, bones, disks, ligaments, tendons, and even the organs that lie toward the back of the abdomen. The most common cause of back pain is strain of the muscles or ligaments involved in movement. Muscle strain is most commonly arises f ...

Cluster headache is very painful type of headache that occurs in cyclic clusters of multiple headaches generally over the course of a week. The headaches are characterized by one-sided pain (especially localized to the eye), tearing or redness of the eye on the affected side, and stuffiness of the nostril on that side. However, cluster headaches can occur without those classic signs. The headaches are intense and come one suddenly but leave just as quickly. Periods with more frequent headach ...