Spasticity or muscular hypertonicity is a disorder of the central nervous system (CNS) in which certain muscles continually receive a message to tighten and contract. The nerves leading to those muscles, unable to regulate themselves (which would provide for normal muscle tone), permanently and continually "over-fire" these commands to tighten and contract. This causes stiffness or tightness of the muscles and interferes with gait and movement, a...
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Spasticity
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