AMEI's Current Trends in Diagnosis & Treatment

Register      Login

VOLUME 3 , ISSUE 1 ( January-June, 2019 ) > List of Articles

CASE REPORT

Morvan's Syndrome—A Case Report of a Rare Clinical Scenario

Dinesh Kumar, Saniya Kapila

Keywords : Agrypnia excitata, Antivoltage-gated potassium channel antibodies, Morvan's syndrome

Citation Information : Kumar D, Kapila S. Morvan's Syndrome—A Case Report of a Rare Clinical Scenario. Curr Trends Diagn Treat 2019; 3 (1):33-34.

DOI: 10.5005/jp-journals-10055-0056

License: CC BY-NC 4.0

Published Online: 01-06-2019

Copyright Statement:  Copyright © 2019; The Author(s).


Abstract

Background: Neuromyotonia is a disorder of peripheral nerve hyperexcitability, causing spontaneous muscular activity. It is an extremely rare disease. Infrequency with which it is encountered and nonspecific, vague symptoms in young people make it a formidable diagnostic challenge. Case description: We present a case of a 34-year-old male with complaints of twitching in muscles and pain in the thigh and calf region. These complaints occurred on and off since the last 6 months. He has a positive family history of similar symptoms. The patient was positive for serum voltage gated potassium channels (VGKC) antibodies. Electromyography (EMG) studies showed evidence of neuromyotonia. A diagnosis of Morvan's syndrome (neuromyotonia) was made on the basis of symptoms and EMG findings. The treatment of the patient was started on intravenous steroids, antiepileptics, and SSRI. Conclusion: Diagnosis of neuromyotonia is a challenge. Awareness among people is important to mitigate the symptoms and provide timely management.


HTML PDF Share
  1. Guttmann L, Guttmann L. Myokymia and neuromyotonia 2004. J Neurol 2004;251:138–142. DOI: 10.1007/s00415-004-0331-5.
  2. Merchut MP. Management of voltage-gated potassium channel antibody disorders. Neurol Clin 2010;28:941–959. DOI: 10.1016/j.ncl.2010.03.024.
  3. Irani SR, Pettingill P, et al. Morvan syndrome: Clinical and serological observations in 29 cases. Ann Neurol 2012;72:241–255. DOI: 10.1002/ana.23577.
  4. Hart IK, Maddison P, et al. Phenotypic variants of autoimmune peripheral nerve hyperexcitability. Brain 2002;125:1887–1895. DOI: 10.1093/brain/awf178.
  5. Maddison P, Lawn N, et al. Acquired neuromyotonia in a patient with spinal epidural abscess. Muscle Nerve 1998;21:672–674. DOI: 10.1002/(SICI)1097-4598(199805)21:5<672::AID-MUS21>3.0.CO;2-W.
  6. Diaz JH. Chronic postoperative epidural abscess with ascending neuromyotonia. Anesth Analg 2002;95:1770–1771. DOI: 10.1097/00000539-200212000-00056.
  7. Harrison AR, Wirtschafter JD. Ocular neuromyotonia in a patient with cavernous sinus thrombosis secondary to mucormycosis. Am J Ophthalmol 1997;124:122–123. DOI: 10.1016/s0002-9394(14)71663-0.
  8. Misra UK, Kalita J, et al. Neuromyotonia with neuropathy and muscle hypertrophy: association or cause? Electromyogr Clin Neurophysiol 2006;46:17–20.
  9. Hahn AF, Parkes AW, et al. Neuromyotonia in hereditary motor neuropathy. J Neurol Neurosurg Psychiatry 1991;54:230–235. DOI: 10.1136/jnnp.54.3.230.
  10. Vincent A, Buckley C, et al. Potassium channel antibody-associated encephalopathy: a potentially immunotherapy-responsive form of limbic encephalitis. Brain 2004;127:701–712. DOI: 10.1093/brain/awh077.
PDF Share
PDF Share

© Jaypee Brothers Medical Publishers (P) LTD.