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Spasticity: signs of symptoms and causes
Spasticity is the most common symptom of upper motor neurons. Spasticity is an increase in resistance to passive movement due to an abnormal increase in muscle tone at rest.
Description
Spasticity is an increase in resistance to passive movement due to an abnormal increase in muscle tone at rest. There are three distinct characteristics:
Resistance depends on speed (muscle tone increases with the speed of the passive motor).
There is a difference between flexural tonicity (increased tonicity in the arms and stretching in the lower extremities).
The appearance of muscle weakness.
Causes
Common
Brain infarction.
Brain haemorrhage.
Infarction, a posterior branch of the inner sac.
Multiple sclerosis.
Less common
Spinal cord injury.
Tumors (eg. Tumor, abscess, vascular malformation-AVM).
Progressive spasticity.
Clostridium tetani.
Strychnine.
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