Is Dysautonomia / POTS hereditary?

Postural Orthostatic Tachycardia Syndrome (POTS), a common form of Dysautonomia, is considered a complex, multifactorial condition rather than a simple hereditary disease caused by a single gene mutation.

While Dysautonomia / POTS often clusters in families, suggesting a genetic predisposition, it does not follow a classic Mendelian inheritance pattern like autosomal dominant or recessive inheritance. Instead, it is likely the result of a combination of multiple genetic variations interacting with environmental triggers. Because it is multifactorial, there is no fixed percentage of risk for children of an affected parent; the likelihood of a child developing symptoms depends on a unique constellation of inherited susceptibility factors and external life events.

Genetic Testing and Counseling

Currently, there is no single diagnostic genetic test for Dysautonomia / POTS. Genetic testing is generally reserved for patients who present with clinical features of underlying connective tissue disorders, such as Ehlers-Danlos Syndrome (EDS), which is frequently comorbid with Dysautonomia / POTS. In these specific cases, a geneticist may test for mutations in genes related to collagen production.

Genetic counseling is highly recommended for families looking to understand their specific risks. A counselor can help map your family history, distinguish between hereditary syndromes and sporadic presentations, and provide context for those planning pregnancies. De novo (spontaneous) mutations are not the primary driver of Dysautonomia / POTS, as the condition is usually viewed as a polygenic predisposition rather than a single-gene disorder.

Clinical Considerations

Because there is no known "POTS gene," carrier testing and prenatal diagnosis are not currently applicable or available for this condition. If you are concerned about family history, focus on documenting the presence of related conditions like hypermobility, autoimmune issues, or small fiber neuropathy, as these can provide clearer insights into the familial nature of your symptoms.

Disclaimer: This information is for educational purposes and should not replace professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions regarding a medical condition.

References

• NIH Genetic and Rare Diseases Information Center (GARD)


• Dysautonomia International


• Online Mendelian Inheritance in Man (OMIM)