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)|
|Absent Achilles reflex||-|
|Autosomal recessive inheritance||-|
|Cerebellar vermis atrophy||-|
|Decreased nerve conduction velocity||-|
|Decreased number of large peripheral myelinated nerve fibers||-|
|Decreased sensory nerve conduction velocity||-|
|Distal muscle weakness||-|
|Distal sensory impairment||-|
|Impaired smooth pursuit||-|
|Impaired vibration sensation in the lower limbs||-|
|Loss of Purkinje cells in the cerebellar vermis||-|
|Progressive gait ataxia||-|
|Progressive truncal ataxia||-|
|Swan neck-like deformities of the fingers||-|
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.
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.