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  2. Tremor - Wikipedia

    en.wikipedia.org/wiki/Tremor

    Specialty. Neurology. A tremor is an involuntary, [1] somewhat rhythmic muscle contraction and relaxation involving oscillations or twitching movements of one or more body parts. It is the most common of all involuntary movements and can affect the hands, arms, eyes, face, head, vocal folds, trunk, and legs.

  3. Essential tremor - Wikipedia

    en.wikipedia.org/wiki/Essential_tremor

    Essential tremor (ET), also called benign tremor, familial tremor, and idiopathic tremor, is a medical condition characterized by involuntary rhythmic contractions and relaxations (oscillations or twitching movements) of certain muscle groups in one or more body parts of unknown cause. [ 6 ] It is typically symmetrical, and affects the arms ...

  4. Rhythmic movement disorder - Wikipedia

    en.wikipedia.org/wiki/Rhythmic_movement_disorder

    Rhythmic movement disorder. Rhythmic movement disorder (RMD) is a neurological disorder characterized by repetitive movements of large muscle groups immediately before and during sleep often involving the head and neck. It was independently described first in 1905 by Zappert as jactatio capitis nocturna and by Cruchet as rhythmie du sommeil. [1]

  5. Dyskinesia - Wikipedia

    en.wikipedia.org/wiki/Dyskinesia

    Dyskinesia. Dyskinesia refers to a category of movement disorders that are characterized by involuntary muscle movements, [1] including movements similar to tics or chorea and diminished voluntary movements. [2] Dyskinesia can be anything from a slight tremor of the hands to an uncontrollable movement of the upper body or lower extremities.

  6. Motor disorder - Wikipedia

    en.wikipedia.org/wiki/Motor_disorder

    These disorders can cause lack of intended movement or an excess of involuntary movement. [4] Symptoms of motor disorders include tremors, jerks, twitches, spasms, contractions, or gait problems. [citation needed] Tremor is the uncontrollable shaking of an arm or a leg.

  7. Benign fasciculation syndrome - Wikipedia

    en.wikipedia.org/wiki/Benign_fasciculation_syndrome

    Prognosis. Good-Excellent. 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. The tongue can also be affected.

  8. Chorea - Wikipedia

    en.wikipedia.org/wiki/Chorea

    Chorea. Chorea (or choreia, occasionally) is an abnormal involuntary movement disorder, characterized by quick movements of the hands or feet. It is one of a group of neurological disorders called dyskinesias. The term chorea is derived from the Ancient Greek: χορεία ("dance"; see choreia), as the movements of the body is comparable to ...

  9. Myoclonus - Wikipedia

    en.wikipedia.org/wiki/Myoclonus

    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 disease. It belongs to the hyperkinetic movement disorders ...

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