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.
|Medical Terms||Other Names||
|30%-79% of people have these symptoms|
|Axial muscle weakness||0003327|
|Decreased fetal movement||
Less than 10 fetal movements in 12 hours
Poor feeding[ more ]
Decreased muscle tone
Low muscle tone[ more ]
|Increased variability in muscle fiber diameter||0003557|
|Internally nucleated skeletal muscle fibers||0031237|
|Muscle fiber hypertrophy||0100293|
|Proximal muscle weakness||
Weakness in muscles of upper arms and upper legs
|Type 1 muscle fiber atrophy||0011807|
|Type 1 muscle fiber predominance||0003803|
|5%-29% of people have these symptoms|
Undescended testis[ more ]
Water retention[ more ]
Increased palatal height[ more ]
Loosejointedness[ more ]
Small penis[ more ]
Decreased breadth of face
Decreased width of face[ more ]
High levels of amniotic fluid
Drooping upper eyelid
|Rectus femoris muscle atrophy||0040191|
|Recurrent respiratory infections||
Frequent respiratory infections
Multiple respiratory infections
respiratory infections, recurrent
Susceptibility to respiratory infections[ more ]
Abnormal curving of the spine
Smaller than typical growth of scrotum
|Severe postnatal growth retardation||
Marked growth retardation
Severe growth delay in children
Severe postnatal growth failure[ more ]
|Shoulder girdle muscle weakness||0003547|
|Tented upper lip vermilion||0010804|
|Percent of people who have these symptoms is not available through HPO|
Absent tendon reflexes
Exercise-induced muscle pain
Muscle pain on exercise
Muscle pain with exercise
Muscle pain, exercise-induced[ more ]
|Feeding difficulties in infancy||0008872|
|Generalized muscle weakness||0003324|
Low or weak muscle tone
Low muscle tone, in neonatal onset
Underdeveloped lung[ more ]
|Skeletal muscle atrophy||
Muscle wasting[ more ]
|Type 1 and type 2 muscle fiber minicore regions||0003787|
Making a diagnosis for a genetic or rare disease can often be challenging. Healthcare professionals typically look at a person’s medical history, symptoms, physical exam, and laboratory test results in order to make a diagnosis. The following resources provide information relating to diagnosis and testing for this condition. If you have questions about getting a diagnosis, you should contact a healthcare professional.
The resources below provide information about treatment options for this condition. If you have questions about which treatment is right for you, talk to your healthcare professional.
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.
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.
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.
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