Orpha Number: 99742
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||
|80%-99% of people have these symptoms|
|Cerebellar vermis hypoplasia||0001320|
|Death in infancy||
Lethal in infancy[ more ]
Poor feeding[ more ]
Abnormally small skull
Decreased circumference of cranium
Decreased size of skull
Reduced head circumference
Small head circumference[ more ]
Little lower jaw
Small lower jaw[ more ]
Receding forehead[ more ]
|30%-79% of people have these symptoms|
Increased muscle tone of arm or leg
Fewer or absent grooves in brain
Low or weak muscle tone
|5%-29% of people have these symptoms|
|Cleft soft palate||0000185|
|Decreased fetal movement||
Less than 10 fetal movements in 12 hours
|Decreased skull ossification||
Decreased bone formation of skull
Grand mal seizures
|Limitation of joint mobility||
Decreased joint mobility
Decreased mobility of joints
Limited joint mobility
Limited joint motion[ more ]
|Percent of people who have these symptoms is not available through HPO|
Underdeveloped cerebellum[ more ]
Symptoms present at birth
Flexed joint that cannot be straightened
Increased lactate in body
|Muscular hypotonia of the trunk||
Low muscle tone in trunk
|Partial agenesis of the corpus callosum||0001338|
Progressively abnormally small cranium
Progressively abnormally small skull[ more ]
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.
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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