Pennsylvania has approved medical marijuana use for, “Damage to the nervous tissue of the central nervous system (brain-spinal cord) with objective neurological indication of intractable spasticity, and other associated neuropathies.”
Damage to the central nervous system wiring apparatus can lead to many problems that impair activities of daily living such as uncontrollable muscle spasms, twitching, severe muscle weakness, etc. This can be caused by injuries such as motor vehicle accidents, traumatic falls and workplace injuries. Several genetic disorders can lead to similar problems that fall under this qualification.
Medical marijuana typically helps patients with this condition by decreasing spasticity and providing some neuropathic pain relief.