"If so, what type of marijuana should I use and how often?"
Very likely. Muscle spasm, caused by issues with the nervous system, is a common qualifying condition in medical cannabis states, and in other countries, they have some studies indicating a good balance between THC and CBD can be helpful for symptom control. Often it can be difficult to find medications for spasm that don’t have negative side effects, so I can see why you might be looking into medical cannabis as an option.
drbultman