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Spastic hypertonia involves uncontrollable muscle spasms, stiffening or straightening out of muscles, shock-like contractions of all or part of a group of muscles, and abnormal muscle tone. It is seen in disorders such as cerebral palsy, stroke, and spinal cord injury. Rigidity is a severe state of hypertonia where muscle resistance occurs ...
Muscle stiffness and contraction can cause abnormal resting postures. Around 70% of those with SPS have the "classic" form of the disease. [5] People with classic SPS typically first experience intermittent tightness or aching in the muscles of the trunk. [6] These muscles repeatedly and involuntarily contract, causing them to grow and rigidify ...
The cause of spasticity is thought to be where an imbalance occurs in the excitatory and inhibitory input to α motor neurons caused by damage to the spinal cord and/or central nervous system. The damage causes a change in the balance of signals between the nervous system and the muscles, leading to increased excitability in muscles.
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That muscle soreness, specifically the delayed-onset muscle soreness (DOMS) you feel a day or two after a hard workout, is the result of small tears in your tissues, according to a study published ...
Muscle stiffness may also be present; if muscle weakness is not also present, and cramps are more severe, the stiffness may be categorized instead as cramp fasciculation syndrome. [3] Cramp fasciculation is a variant of BFS which presents with muscle pain and exercise intolerance. [2] [4]
Cramp fasciculation syndrome (CFS) is a rare [1] peripheral nerve hyperexcitability disorder. It is more severe than the related (and common) disorder known as benign fasciculation syndrome; it causes fasciculations, cramps, pain, fatigue, and muscle stiffness similar to those seen in neuromyotonia (another related condition). [2]
Spastic diplegia is a form of cerebral palsy (CP) that primarily affects the legs, with possible considerable asymmetry between the two sides. It is a chronic neuromuscular condition of hypertonia and spasticity in the muscles of the lower extremities of the human body, manifested as an especially high and constant "tightness" or "stiffness", [1] [2] usually in the legs, hips and pelvis.