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  2. Spasticity - Wikipedia

    en.wikipedia.org/wiki/Spasticity

    It primarily involves the antigravity muscles – flexors of the upper limb and extensors of the lower limb. During the passive stretch, a brief "free interval" is appreciated in spasticity but not in rigidity because the resting muscle is electromyographically silent in spasticity. In contrast, in rigidity, the resting muscle shows firing. [10]

  3. Hypertonia - Wikipedia

    en.wikipedia.org/wiki/Hypertonia

    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 ...

  4. Myoclonus - Wikipedia

    en.wikipedia.org/wiki/Myoclonus

    Myoclonus is a brief, involuntary, irregular (lacking rhythm) twitching of a muscle, a joint, or a group of muscles, different from clonus, which is rhythmic or regular.. Myoclonus (myo-"muscle", clonus "spasm") describes a medical sign and, generally, is not a diagnosis of a dis

  5. Limb infarction - Wikipedia

    en.wikipedia.org/wiki/Limb_infarction

    Muscle spasm in the affected area [1] Numbness and tingling in an arm or leg [1] [2] Paleness [1] [2] of the skin of the arm or leg; Muscle weakness of an arm or leg, [1] [2] possibly to the grade of paralysis [2] Later symptoms are closely related to infarction of the tissue supplied by the occluded artery: Blisters of the skin in the affected ...

  6. Fasciculation - Wikipedia

    en.wikipedia.org/wiki/Fasciculation

    A fasciculation, or muscle twitch, is a spontaneous, involuntary muscle contraction and relaxation, involving fine muscle fibers. [1] They are common, with as many as 70% of people experiencing them. [1]

  7. Spasm - Wikipedia

    en.wikipedia.org/wiki/Spasm

    A spasm is a sudden involuntary contraction of a muscle, [1] a group of muscles, or a hollow organ, such as the bladder. A spasmodic muscle contraction may be caused by many medical conditions, including dystonia .

  8. Benign fasciculation syndrome - Wikipedia

    en.wikipedia.org/wiki/Benign_fasciculation_syndrome

    Benign fasciculation syndrome (BFS) is characterized by fasciculation (twitching) of voluntary muscles in the body. [1] The twitching can occur in any voluntary muscle group but is most common in the eyelids, arms, hands, fingers, legs, and feet.

  9. Acquired non-inflammatory myopathy - Wikipedia

    en.wikipedia.org/wiki/Acquired_non-inflammatory...

    Patients with acquired non-inflammatory myopathy typically experience weakness, cramping, stiffness, and tetany, most commonly in skeletal muscle surrounding the limbs and upper shoulder girdle. [1] The most commonly reported symptoms are: Muscle fatigue [1] Pain [1] Muscle spasms and cramps; Tingling; Numbness; Tetany [1] Loss of coordination ...

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