muscle spasm
"I was diagnosed with a muscular neurological disorder of unknown origin - SPS - with both my legs becoming stiff and my feet cramping a lot, with no control over lower bodily functions. I was given an Rx @ 20mg X 2 daily and was told to watch gastro for side effects. Didn't really have any problems there but the Rx worked at getting me ambulatory again. I tried to up it to 40mg X 2 daily but it made me sleepy and the Neuro told me better to take the 20 3 or 4 times a day rather than 40mg all at once. 

As with all Dx and Rx some collaboration with the doctor and experimentation by the Px is required to  find the right Rx dosage for the symptoms. I am able to ride bike, walk and drive, get around, but no quick reflex activity."