I was going to comment something similar. I'll add this, however. Some MS patients also suffer with muscle spasticity - basically a muscle that stays contracted. This can be painful and limit mobility: At best it is uncomfortable. Normal treatment includes things like Valium.

In tests with cannabis, patients reported improvements with both mobility and the amount of pain/discomfort. However, when researchers measured the spasticity there was no clinical improvement. Both were true - it seems sometimes all folks need to do is not be so bothered by their daily pains.