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93 Possible Causes for Percussion Myotonia

  • Generalized Myotonia of Thomsen

    On examination he showed percussion myotonia. There was no grip myotonia or eyelid myotonia. Nerve conduction studies were normal.[jnnp.bmj.com] Secondary outcomes: (1) clinical relaxation time; (2) electromyographic relaxation time; (3) stair test; (4) presence of percussion myotonia; and (5) adverse events.[cochrane.org] Proband shows percussion myotonia of the tongue.[indianpediatrics.net]

  • Paramyotonia Congenita

    They experience neither grip nor percussion myotonia during warm weather, whereas myotonia is provoked by cold. Her younger son has no symptoms.[ncbi.nlm.nih.gov] Also of diagnostic importance are the myotonic reactions inducible at room temperature, such as percussion myotonia, active myotonia and paradoxical myotonia.[ncbi.nlm.nih.gov] Percussion myotonia of the tongue and thenar muscles could be elicited at room temperature. Myotonia was aggravated by cold.[ncbi.nlm.nih.gov]

  • Myotonia Congenita

    The diagnosis were based upon family history, clinical findings of percussion myotonia, had grip myotania, prominent muscular hypertrophy and confirmed by electromyographic[ncbi.nlm.nih.gov] Distribution/anatomy Time course Onset/age Myotonia is usually mild, approximately 50% may have percussion myotonia.[rrnursingschool.biz] On examination he showed percussion myotonia. There was no grip myotonia or eyelid myotonia. Nerve conduction studies were normal.[jnnp.bmj.com]

  • Muscular Dystrophy

    Myotonia (prolonged muscle contraction) occurs spontaneously or is elicited by voluntary activity or by mild stimulation, such as tapping on a muscle (percussion myotonia)[neuropathology-web.org]

  • Bilateral Leg Weakness

    Inflammation of muscles produces irritability of the muscles which is sometimes visible with gentle percussion- Marked contractions of muscles after percussion, myotonia,[pedclerk.bsd.uchicago.edu]

  • Focal Myositis

    It mimicks myotonia on percussion, but myotonic discharges are not seen on EMG.[jdrntruhs.org] Percussion myotonia [Figure 2] was present in all the limbs. There was delayed relaxation of deep tendon reflexes.[jdrntruhs.org] Patients are often misdiagnosed with myotonia, polymyositis, or muscular dystrophies.[jdrntruhs.org]

  • Behr Syndrome

    , Cramps, Myalgias Epidemiology: 1 family Inheritance: Dominant Clinical Percussion myotonia Cramps Stiffness: Posteffort Myotonic lid lag Laboratory Muscle: Cylindrical[neuromuscular.wustl.edu] […] with: Tubules or vesicles Associated with: Tubular aggregates Different from: Concentric laminated bodies in D-2-hydroxyglutaric aciduria Disease associations: Not specific Myotonia[neuromuscular.wustl.edu]

  • Myotonic Dystrophy

    Percussion myotonia or myotonia of grasp or both is usually present if looked for.[pediatrics.aappublications.org] Secondary outcomes: (1) clinical relaxation time; (2) electromyographic relaxation time; (3) stair test; (4) presence of percussion myotonia; and (5) adverse events.[cochrane.org] The less common clinical syndromes, which include the two possible cases of myotonic dystrophy, are: (2) almost pure myotonia, symptomatic from early infancy (one case) or[pediatrics.aappublications.org]

  • Paramyoclonus Multiplex

    Myokymia, muscle hypertrophy and percussion "myotonia" in chronic recurrent polyneuropathy. Neurology . 1978 Nov. 28(11):1130-4. [Medline] .[emedicine.medscape.com]

  • Upper Limb Hypertrophy

    No percussion myotonia or involuntary movements were noted. Sensory examination was normal and tendon reflexes were elicited normally and symmetric.[amhsjournal.org]

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