Syringomyelia disorder is a cyst that forms within the spinal cord. Damage in this area may result in pain and weakness as well as profound stiffness in the back, shoulders, arms or legs. Other syringomyelia symptoms may include headaches, not able to sense hot or cold, especially in the hands. Syringomyelia (SM) may also cause sweating as well as affecting sexual, bladder and bowel functions. Sites listed here offer official and unofficial syringomyelia information, advice and facts plus diagnosis and treatment details.