Because there are many different conditions grouped into the movement disorder classification, it is hard to make a sweeping statement about whether medical cannabis can help movement disorders.
However, it is known that upon entering the body, cannabis compounds like THC and CBD enter the endocannabinoid system. Amongst being responsible for many other bodily functions and responses, the endocannabinoid system is closely linked with motor function.
People with movement disorders typically have ‘imbalances’ in their endocannabinoid system’s functionality when it comes to regulating these motor responses, and it's believed that certain cannabis compounds can target these imbalances and attempt to restore function, or improve their responses.
For example, real-life evidence shows cannabis-based products have had promising results when combatting tremors, and therefore hold potential for patients with conditions like Parkinson’s and Huntington’s disease. Other reports suggest medical cannabis may also relieve the frequency or severity of tics, which could be helpful for patients with Tourette syndrome.
Medical cannabis and cannabis-based treatments will not be suitable for everyone with a movement disorder, but they may be able to offer relief to those who have been unable to find success with conventionally licensed treatment options for their condition.