National Center for Advancing and Translational Sciences Genetic and Rare Diseases Information Center, a program of the National Center for Advancing and Translational Sciences

Neuropathy, hereditary motor and sensory, Okinawa type



Other Names:
HMSNO; HEREDITARY MOTOR AND SENSORY NEUROPATHY, PROXIMAL TYPE; HMSNP
Categories:

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs.
orphanet

Orpha Number: 90117

Definition
Hereditary motor and sensory neuropathy, Okinawa type is a rare, genetic, axonal hereditary motor and sensory neuropathy characterized by the adult-onset of slowly progressive, symmetric, proximal dominant muscle weakness and atrophy, painful muscle cramps, fasciculations and distal sensory impairment, mostly (but not exclusively) in individuals (and their descendents) from the Okinawa region in Japan. Absent deep tendon reflexes, elevated creatine kinase levels and autosomal dominant inheritance are also characteristic.

Visit the Orphanet disease page for more resources.
Last updated: 11/1/2017

This table lists symptoms that people with this disease may have. For most diseases, symptoms will vary from person to person. People with the same disease may not have all the symptoms listed. This information comes from a database called the Human Phenotype Ontology (HPO) . The HPO collects information on symptoms that have been described in medical resources. The HPO is updated regularly. Use the HPO ID to access more in-depth information about a symptom.

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Medical Terms Other Names
Learn More:
HPO ID
5%-29% of people have these symptoms
Hand tremor
Tremor of hand
Tremor of hands
tremors in hands
[ more ]
0002378
Percent of people who have these symptoms is not available through HPO
Adult onset
Symptoms begin in adulthood
0003581
Areflexia
Absent tendon reflexes
0001284
Autosomal dominant inheritance 0000006
Axonal degeneration 0040078
Decreased number of peripheral myelinated nerve fibers 0003380
Degeneration of anterior horn cells 0002398
Distal sensory impairment
Decreased sensation in extremities
0002936
Fasciculations
Muscle twitch
0002380
Gait disturbance
Abnormal gait
Abnormal walk
Impaired gait
[ more ]
0001288
Gliosis 0002171
Hyperlipidemia
Elevated lipids in blood
0003077
Mildly elevated creatine kinase 0008180
Muscle spasm 0003394
Peripheral neuropathy 0009830
Proximal amyotrophy
Wasting of muscles near the body
0007126
Proximal muscle weakness
Weakness in muscles of upper arms and upper legs
0003701
Sensory neuropathy
Damage to nerves that sense feeling
0000763
Slow progression
Signs and symptoms worsen slowly with time
0003677
Tetraplegia
Paralysis of all four limbs
0002445
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Last updated: 7/1/2020

If you need medical advice, you can look for doctors or other healthcare professionals who have experience with this disease. You may find these specialists through advocacy organizations, clinical trials, or articles published in medical journals. You may also want to contact a university or tertiary medical center in your area, because these centers tend to see more complex cases and have the latest technology and treatments.

If you can’t find a specialist in your local area, try contacting national or international specialists. They may be able to refer you to someone they know through conferences or research efforts. Some specialists may be willing to consult with you or your local doctors over the phone or by email if you can't travel to them for care.

You can find more tips in our guide, How to Find a Disease Specialist. We also encourage you to explore the rest of this page to find resources that can help you find specialists.

Healthcare Resources


Research helps us better understand diseases and can lead to advances in diagnosis and treatment. This section provides resources to help you learn about medical research and ways to get involved.

Clinical Research Resources

  • The Centers for Mendelian Genomics program is working to discover the causes of rare genetic disorders. For more information about applying to the research study, please visit their website.

These resources provide more information about this condition or associated symptoms. The in-depth resources contain medical and scientific language that may be hard to understand. You may want to review these resources with a medical professional.

In-Depth Information

  • The Monarch Initiative brings together data about this condition from humans and other species to help physicians and biomedical researchers. Monarch’s tools are designed to make it easier to compare the signs and symptoms (phenotypes) of different diseases and discover common features. This initiative is a collaboration between several academic institutions across the world and is funded by the National Institutes of Health. Visit the website to explore the biology of this condition.
  • Online Mendelian Inheritance in Man (OMIM) is a catalog of human genes and genetic disorders. Each entry has a summary of related medical articles. It is meant for health care professionals and researchers. OMIM is maintained by Johns Hopkins University School of Medicine. 
  • Orphanet is a European reference portal for information on rare diseases and orphan drugs. Access to this database is free of charge.
  • PubMed is a searchable database of medical literature and lists journal articles that discuss Neuropathy, hereditary motor and sensory, Okinawa type. Click on the link to view a sample search on this topic.

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