Oops! No, spasms are not sensory. Spasms are part of spasticity and there are different meds you could try: Baclofen, Zanaflex, Klonopin (Clonazepam) and I believe there are other meds I'm forgetting.

Here is more information about spasticity -
http://www.nationalmssociety.org/abo...ity/index.aspx