Methods for treating chronic pain, neuropathic pain or spasticity are provided. Some embodiments are to methods for treatment comprising administering cells obtained from human umbilical cord tissue, or administering pharmaceutical compositions comprising such cells or prepared from such cells. In some embodiments, administering the cells promotes repair and regeneration of nerves in the patient to decrease chronic pain, neuropathic pain or spasticity. Pharmaceutical compositions for use in the inventive methods, as well as kits for practicing the methods are also provided.