What are the causes of spastic movements?

HYPERTONICITY: Hyper tonic movements may be considered as extrpyramidal signs which means a disorder of the basal ganglia which are a structure in the brain controlling the muscle functions, usually Dopamine is the main neurotransmitter responsible for that. Parkinson disease is one of that disorder which caused by depletion of Dopamine in the brain.

Spasticity: Diagnosis involves nerve conduction velocity studies, electromyography, and exclusion of other disorders via MRI and laboratory tests. Treatment is supportive. Motor neuron disorders (mnds) are characterized by steady, relentless, progressive degeneration of corticospinal tracts, anterior horn cells, bulbar motor nuclei, or a combination. Symptoms vary in severity and may include muscle weakness.