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 |
---|---|---|
1%-4% of people have these symptoms | ||
Areflexia |
Absent tendon reflexes
|
0001284 |
Death in childhood | 0003819 | |
Death in infancy |
Infantile death
Lethal in infancy
[ more ]
|
0001522 |
Elevated lactate:pyruvate ratio | 0032653 | |
Elevated serum alanine aminotransferase | 0031964 | |
Elevated serum aspartate aminotransferase | 0031956 | |
Feeding difficulties |
Feeding problems
Poor feeding
[ more ]
|
0011968 |
Focal T2 hyperintense basal ganglia lesion | 0007183 | |
Generalized neonatal |
Generalized low muscle tone in neonate
|
0008935 |
Hearing impairment |
Deafness
Hearing defect
[ more ]
|
0000365 |
Hyperhidrosis |
Excessive sweating
Increased sweating
Profuse sweating
Sweating
Sweating profusely
Sweating, increased
[ more ]
|
0000975 |
Hypoglycemia |
Low blood sugar
|
0001943 |
Hypothermia |
Abnormally low body temperature
|
0002045 |
Increased CSF lactate | 0002490 | |
Infantile muscular hypotonia |
Decreased muscle tone in infant
|
0008947 |
Infantile onset |
Onset in first year of life
Onset in infancy
[ more ]
|
0003593 |
Early and severe mental retardation
Mental retardation, severe
Severe mental retardation
[ more ]
|
0010864 | |
Intrauterine growth retardation |
Prenatal growth deficiency
Prenatal growth retardation
[ more ]
|
0001511 |
Lactic acidosis |
Increased lactate in body
|
0003128 |
Lacticaciduria |
High urine lactic acid levels
|
0003648 |
Methylmalonic aciduria | 0012120 | |
Muscular hypotonia of the trunk |
Low muscle tone in trunk
|
0008936 |
Neonatal death |
Neonatal lethal
|
0003811 |
Neonatal onset | 0003623 | |
Persistent head lag | 0032988 | |
Poor head control | 0002421 | |
Percent of people who have these symptoms is not available through HPO | ||
0000007 | ||
Cerebral atrophy |
Degeneration of cerebrum
|
0002059 |
Decreased activity of mitochondrial complex I | 0011923 | |
Decreased activity of mitochondrial complex III | 0011924 | |
Decreased activity of mitochondrial complex IV | 0008347 | |
Depletion of mitochondrial DNA in muscle |
0009141 | |
Elevated brain lactate level by MRS | 0012707 | |
0001298 | ||
Failure to thrive |
Faltering weight
Weight faltering
[ more ]
|
0001508 |
Global developmental delay | 0001263 | |
Hyperglycinemia |
Elevated blood glycine levels
|
0002154 |
Hypertaurinemia | 0500181 | |
Neonatal respiratory distress |
Infantile respiratory distress
Newborn respiratory distress
Respiratory distress, neonatal
[ more ]
|
0002643 |
Respiratory failure | 0002878 | |
Skeletal muscle atrophy |
Muscle degeneration
Muscle wasting
[ more ]
|
0003202 |
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.