Sinemet for Spasticity and Function in Amyotrophic Lateral Sclerosis and Primary Lateral Sclerosis

Motivated by the success of dopaminergic drugs in treating rigidity associated with Parkinson's disease, some neurologists have used carbidopa-levodopa (Sinemet) to attempt to improve spasticity in ALS and PLS patients. However, data on the efficacy of carbidopa/levodopa is limited. Given the limited data and potential to improve the quality of life of these patients, the effectiveness of carbidopa-levodopa in ALS and PLS patients with severe spasticity should be studied. The investigators hypothesis is that administration of carbidopa-levodopa will improve spasticity in ALS and PLS patients.