OSCAR BURRIEL / SCIENCE PHOTO LIBRARY OSCAR BURRIEL / SCIENCE PHOTO LIBRARY
Shoulder pain. Side view of a man holding his shoulder while suffering from pain. Shoulder pain and stiffness may be caused by spasm of muscles, including those in the neck, back and upper arm. This may be caused by strain or injury to soft tissues, or more seriously a fracture or dislocation of the shoulder bones. Treatments of milder forms of shoulder pain include use of painkilling drugs and massage.
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