chronic spasticity
"I have spasticity (stiffness) in my lower back and right leg due to multiple sclerosis.  I had used marijuana for quite a while and it helped my spasticity but was not good for my cognitive thinking.  I stopped the marijuana and began taking baclofen 20 mg x 3 /day.  I walk and feel so much better.  I might not be as aware of how much better I am until I miss or delay taking it. I have experienced no side effects."