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 | Learn More: HPO ID |
|---|---|---|
| 80%-99% of people have these symptoms | ||
| Cerebellar dysplasia | 0007033 | |
| Cerebral dysmyelination | 0007266 | |
| Cortical dysplasia | 0002539 | |
| Motor delay | 0001270 | |
| Ventriculomegaly | 0002119 | |
| 30%-79% of people have these symptoms | ||
| Abnormal pyramidal sign | 0007256 | |
| Bilateral tonic-clonic seizure with generalized onset | 0025190 | |
| Cerebellar vermis hypoplasia | 0001320 | |
| Esotropia |
Inward turning cross eyed
|
0000565 |
| Gait imbalance |
Abnormality of balance
Abnormality of equilibrium
Imbalanced walk
[ more ]
|
0002141 |
| Global developmental delay | 0001263 | |
| Hypoplasia of the pons | 0012110 | |
| Intellectual disability, severe |
Early and severe mental retardation
Mental retardation, severe
Severe mental retardation
[ more ]
|
0010864 |
| Language impairment | 0002463 | |
| 5%-29% of people have these symptoms | ||
| Atonic seizure | 0010819 | |
| Generalized myoclonic seizure | 0002123 | |
| Hypoplasia of the brainstem |
Small brainstem
Underdeveloped brainstem
[ more ]
|
0002365 |
| Increased head circumference | 0040194 | |
|
Abnormally small skull
Decreased circumference of cranium
Decreased size of skull
Reduced head circumference
Small head circumference
[ more ]
|
0000252 | |
| Typical absence seizure | 0011147 | |
| 1%-4% of people have these symptoms | ||
| Dysmetria |
Lack of coordination of movement
|
0001310 |
| Frontal polymicrogyria | 0006821 | |
| Hypertonia | 0001276 | |
| Intellectual disability |
Mental deficiency
Mental retardation
Mental retardation, nonspecific
Mental-retardation
[ more ]
|
0001249 |
| Seizure | 0001250 | |
| Truncal ataxia |
Instability or lack of coordination of central trunk muscles
|
0002078 |
| Percent of people who have these symptoms is not available through HPO | ||
| Ankle clonus |
Abnormal rhythmic movements of ankle
|
0011448 |
| 0000007 | ||
| Babinski sign | 0003487 | |
| Broad-based gait |
Wide based walk
|
0002136 |
| Cerebellar hypoplasia |
Small cerebellum
Underdeveloped cerebellum
[ more ]
|
0001321 |
| Exotropia |
Outward facing eye ball
|
0000577 |
| Frontoparietal polymicrogyria | 0007095 | |
| Hyperreflexia |
Increased reflexes
|
0001347 |
|
Involuntary, rapid, rhythmic eye movements
|
0000639 | |
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.
Support and advocacy groups can help you connect with other patients and families, and they can provide valuable services. Many develop patient-centered information and are the driving force behind research for better treatments and possible cures. They can direct you to research, resources, and services. Many organizations also have experts who serve as medical advisors or provide lists of doctors/clinics. Visit the group’s website or contact them to learn about the services they offer. Inclusion on this list is not an endorsement by GARD.
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.
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
What is bilateral frontoparietal polymicrogyria? What are its symptoms? How is it different from bilateral perisylvian polymicrogyria in how it presents and what symptoms we see? See answer
