Busting Common EDS & MCAS Myths with Dr. Dacre Knight (Ep 195)

In this "MythBusters" edition of the Bendy Bodies Podcast, Dr. Linda Bluestein and recurring co-host Dr. Dacre Knight tackle the persistent misconceptions surrounding Ehlers-Danlos syndromes (EDS), hypermobility spectrum disorders (HSD), and their frequent companions, Postural Orthostatic Tachycardia Syndrome (POTS) and Mast Cell Activation Syndrome (MCAS).

Dr. Knight, Medical Director of the UVA Health EDS and Hypermobility Disorder Center, shares why hypermobile EDS (hEDS) is a serious condition even when not life-threatening, and why a negative genetic test doesn't rule out a diagnosis. The conversation dives deep into the "invisible" impact of these disorders on long-term disability and work ability, while offering hope through a better understanding of pain processing and nociplastic pain.

From debunking the idea that POTS is merely deconditioning to navigating the controversial waters of MCAS, this episode empowers patients and clinicians with the knowledge needed to look past the surface and recognize the systemic reality of bendy bodies.

Takeaways:

EDS Severity: Hypermobile EDS and HSD are serious, chronic conditions that cause multi-system impairment and long-term disability, regardless of whether they are immediately life-threatening.

Genetic Testing Limits: Current genetic testing cannot rule out hEDS or HSD because their specific genetic markers remain unknown; diagnosis still relies on clinical history and physical assessment.

POTS is Systemic: POTS is far more than simple deconditioning or a cardiac issue; it is a neurologic dysfunction of the autonomic nervous system that impacts everything from heart rate to temperature regulation.

The MCAS Spectrum: While MCAS criteria are still evolving and controversial, focusing on clinical patterns and safe treatment responses can improve quality of life even when lab tests (e.g., tryptase) are negative.

Pain vs. Damage: Pain is a complex, bidirectional experience; patients can experience significant pain without visible structural damage due to central sensitization and dysfunctional pain signaling.

Find the episode transcript here.

Want to learn more about the UVA EDS Center?

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For Appointments and Questions: RUVAEDSCenter@uvahealth.org

UVA EDS: https://www.uvahealth.com/healthy-practice/advancing-care-through-ehlers-danlos-clinic

UVA EDS FAQ: https://www.uvahealth.com/support/eds/faq

UVA Pediatric Integrative Medicine: https://childrens.uvahealth.com/specialties/integrative-health

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