The Human Phenotype Ontology (HPO) provides the following list of features that have been reported in people with this condition. Much of the information in the HPO comes from Orphanet, a European rare disease database. If available, the list includes a rough estimate of how common a feature is (its frequency). Frequencies are based on a specific study and may not be representative of all studies. You can use the MedlinePlus Medical Dictionary for definitions of the terms below.
| Signs and Symptoms | Approximate number of patients (when available) |
| Arrhythmia | 90% |
| EMG abnormality | 90% |
| Hypertonia | 90% |
| Mask-like facies | 90% |
| Myotonia | 90% |
| Skeletal muscle atrophy | 90% |
| Abnormality of the endocrine system | 50% |
| Cataract | 50% |
| Cognitive impairment | 50% |
| Facial palsy | 50% |
| Muscular hypotonia | 50% |
| Respiratory insufficiency | 50% |
| Abnormal hair quantity | 7.5% |
| Abnormality of the hip bone | 7.5% |
| Abnormality of the upper urinary tract | 7.5% |
| Cryptorchidism | 7.5% |
| Hernia of the abdominal wall | 7.5% |
| Hydrocephalus | 7.5% |
| Non-midline cleft lip | 7.5% |
| Strabismus | 7.5% |
| Atrial flutter | 4/11 |
| Autosomal dominant inheritance | - |
| Cerebral atrophy | - |
| Cholelithiasis | - |
| Decreased fetal movement | - |
| Dysphagia | - |
| Excessive daytime sleepiness | - |
| Facial diplegia | - |
| Feeding difficulties in infancy | - |
| First degree atrioventricular block | - |
| Frontal balding | - |
| Hypogonadism | - |
| Intellectual disability, progressive | - |
| Intellectual disability, severe | - |
| Obsessive-compulsive trait | - |
| Polyhydramnios | - |
| Respiratory distress | - |
| Testicular atrophy | - |
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.
Nonprofit support and advocacy groups bring together patients, families, medical professionals, and researchers. These groups often raise awareness, provide support, and develop patient-centered information. Many are the driving force behind research for better treatments and possible cures. They can direct people to research, resources, and services. Many groups also have experts who serve as medical advisors. Visit their website or contact them to learn about the services they offer. Inclusion on this list is not an endorsement by GARD.
Living with a genetic or rare disease can impact the daily lives of patients and families. These resources can help families navigate various aspects of living with a rare disease.
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.
Gordon Research Conferences CAG Triplet Repeat Disorders and the associated Graduate Research Seminar
Saturday, June 22, 2013 -
Friday, June 28, 2013
Location: Waterville Valley Resort,
Waterville Valley,
NH
Description: The 2013 Gordon Research Conference on CAG Triplet Repeat Disorders will bring together top scientists from around the world to discuss high-impact, interdisciplinary research on CAG Triplet Repeat Disorders. The objective of the conference is to promote scientific discussion and facilitate interdisciplinary exchange by bringing leading researchers in the field together with a broad range of experts representing; clinicians, diagnosticians, neurobiologists, pathologists, geneticists and molecular biologists.
Contact: Miles Fabian(301) 594-3827fabianm@mail.nih.gov
Co-funding Institute(s): National Institute of Neurological Disorders and Stroke, Office of Rare Diseases Research
8th International Myotonic Dystrophy Consortium Meeting
Wednesday, November 30, 2011 -
Saturday, December 3, 2011
Location: Sheraton Sand Key,
Clearwater ,
FL
Description: The 8th International Myotonic Dystrophy Consortium Meeting (IDMC-8) will be held at the Sheraton Sand Key Resort in Clearwater Beach Florida November 30 – December 3 2011. This year, the meeting will be preceded by the Outcome Measures for Myotonic Dystrophy on Wednesday November 30 (place website link here) and followed by the EMPOWER2011 Myotonic Dystrophy Family Conference . Participation to the Outcome Measures for Myotonic Dystrophy meeting is by invitation-only while EMPOWER2011 is open to all families living with myotonic dystrophy.
Contact: Dr. John D. Porter(301) 496-1917porterjo@ninds.nih.gov
Co-funding Institute(s): National Institute of Neurological Disorders and Stroke, Office of Rare Diseases Research
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2009 Triplet Repeat Disorders Gordon Conference
Sunday, May 31, 2009 -
Friday, June 5, 2009
Location:
Waterville Valley,
NH
Description: The top two priorities of this conference were training and the communication of cutting-edge science in the area of CAG triplet repeat disorders. The focus of this conference was on areas of rapid advancement and latest developments. Speakers were selected for their expertise, recent contributions to the field, and ability to provide lively presentations. The structured discussion leaders were instructed to focus on issues that cut across each presentation in a session.
Contact: Dr. Margaret Sutherland, NINDS 301-496-5680
Co-funding Institute(s): National Institute of Neurological Disorders and Stroke
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The following diseases are related to Myotonic dystrophy type 1. If you have a question about any of these diseases, you can contact GARD.
Questions sent to GARD may be posted here if the information could be helpful to others. We remove all identifying information when posting a question to protect your privacy. If you do not want your question posted, please let us know. Submit a new question
My son is a young adult and has myotonic dystrophy type 1. He has early cataracts and many other symptoms. He wears glasses and appears recently to have a wandering eye. He also has double vision and fatigue. Is this caused by the myotonic dystrophy? What treatment is recommended? See answer
My girlfriend's grandmother has Myotonic dystrophy type 1. Fortunately neither my girlfriend's mother nor father is affected, but this disease is quite common in her mother's family. I want to know the probability that either my girlfriend or our children could get this disease. See answer
