The Autoimmune Registry
Neuromyotonia Insufficent data to report on this disease.
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  • Names
    • Neuromyotonia
    • Continuous muscle fiber activity syndrome
    • Isaacs' syndrome
    • Isaacs-Mertens syndrome
    • Issacs' syndrome
    • Quantal squander syndrome
    Abbreviations: NMT
    Category: Nervous System
    Prevalence Extremely rare. Fewer than 100 cases in the US. No studies found. Female/Male ratio: Unknown.
    Age of Onset Onset typically occurs between ages 15 and 60.
    Description Neuromyotonia (also known as Issacs' syndrome) is a rare, autoimmune disorder in which hyperactive nerves cause muscles to be over-activated. This hyperactivity results in muscle stiffness, twitching, cramping, increased sweating, and delayed muscle relaxation, especially in the limbs and trunk. These symptoms can occur anytime, even when asleep or under anaesthesia. Weakened reflexes and muscle pain is also common. There is currently no cure, but treatment may manage symptoms.

    Evidence of autoimmunity: Antibody
    Patient Groups
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      Resources Link to Clinical Trials
      Link to PubMed
      References Link to Mayo Clinic
      Link to Cleveland Clinic
      Link to Healthline
      Profile by: Rebecca Wang
    • Profile updated September 2024
    • Charts generated Oct 12, 2024 at 12:54 PM ET
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      * Disease is suspected as autoimmune, but unconfirmed.
      Data Source: Graphs on this page represent data from the Autoimmune Registry Inc. here. To protect participant anonymity, results derived from fewer than 5 participants are not graphed. The Autoimmune Registry Inc is a 501(c)(3) non-profit supported by donors like you.


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      * Biologic medications.
      Data Source: Graphs on this page represent data in electronic health records from the All of Us research database. As of July 2024, there are 451,000 sets of electronic health records collected from participants. A snapshot of the data can be found here. To protect participant anonymity, results derived from fewer than 20 participants are not graphed.
      The All of Us Research Program is supported by the National Institutes of Health, Office of the Director: Regional Medical Centers: 1 OT2 OD026549; 1 OT2 OD026554; 1 OT2 OD026557; 1 OT2 OD026556; 1 OT2 OD026550; 1 OT2 OD 026552; 1 OT2 OD026553; 1 OT2 OD026548; 1 OT2 OD026551; 1 OT2 OD026555; IAA #: AOD 16037; Federally Qualified Health Centers: HHSN 263201600085U; Data and Research Center: 5 U2C OD023196; Biobank: 1 U24 OD023121; The Participant Center: U24 OD023176; Participant Technology Systems Center: 1 U24 OD023163; Communications and Engagement: 3 OT2 OD023205; 3 OT2 OD023206; and Community Partners: 1 OT2 OD025277; 3 OT2 OD025315; 1 OT2 OD025337; 1 OT2 OD025276. In addition, the All of Us Research Program would not be possible without the partnership of its participants.

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      Data Source: Graphs on this page represent data in self-reported survey results from the All of Us research database. As of July 2024, there are 560,000 participants who have completed these surveys. This dataset, however, may not be representative of the US population. A snapshot of the data can be found here. To protect participant anonymity, results derived from fewer than 20 participants are not graphed.
      The All of Us Research Program is supported by the National Institutes of Health, Office of the Director: Regional Medical Centers: 1 OT2 OD026549; 1 OT2 OD026554; 1 OT2 OD026557; 1 OT2 OD026556; 1 OT2 OD026550; 1 OT2 OD 026552; 1 OT2 OD026553; 1 OT2 OD026548; 1 OT2 OD026551; 1 OT2 OD026555; IAA #: AOD 16037; Federally Qualified Health Centers: HHSN 263201600085U; Data and Research Center: 5 U2C OD023196; Biobank: 1 U24 OD023121; The Participant Center: U24 OD023176; Participant Technology Systems Center: 1 U24 OD023163; Communications and Engagement: 3 OT2 OD023205; 3 OT2 OD023206; and Community Partners: 1 OT2 OD025277; 3 OT2 OD025315; 1 OT2 OD025337; 1 OT2 OD025276. In addition, the All of Us Research Program would not be possible without the partnership of its participants.

    • Quick links: 
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      Join the registry!

      Insufficent data to report on this disease.