Interactive Genetic & Rheumatology Instrument

Beighton Score Hypermobility Calculator: 2017 hEDS Criteria Diagnostic Screener

Author: Connective Tissue & Dysautonomia Taskforce Reviewed: October 2026 Evidence Level: 2017 International hEDS Diagnostic Criteria (Malfait et al.) Reading Time: 11 min

1. The Connective Tissue Foundation: hEDS, POTS & ME/CFS

Over 50% of individuals diagnosed with Postural Orthostatic Tachycardia Syndrome (POTS) and Myalgic Encephalomyelitis (ME/CFS) exhibit underlying Generalized Joint Hypermobility (GJH) or Hypermobile Ehlers-Danlos Syndrome (hEDS). This is not a coincidence—it is a shared physiological defect.

Defective collagen synthesis causes connective tissue laxity not just in joints, but in blood vessels throughout the body. When a hypermobile patient stands upright, vein walls stretch excessively like loose elastic bands, causing massive splanchnic and lower extremity venous pooling. This forces the heart into compensatory tachycardia (POTS) and starves brain cells of oxygen, culminating in profound post-exertional neuro-immune fatigue.

Diagnostic Tool

9-Point Beighton Hypermobility Scoring Assistant

Validated 2017 Scoring

Check each test maneuver you can perform. One point is awarded for each side demonstrating positive joint hypermobility, up to a maximum score of 9.

1 & 2. Little Finger (Fifth MCP) Extension:

Rest palm flat on a table. Can your little finger be passively bent backwards beyond 90°?

3 & 4. Thumb to Forearm Apposition:

With arm outstretched, can you bend your thumb backward to touch the front of your forearm?

5 & 6. Elbow Hyperextension:

With arm extended straight out, does your elbow bend backward beyond 10°?

7 & 8. Knee Hyperextension (Genu Recurvatum):

Standing with knees locked, do your knees bend backward beyond 10°?

9. Forward Trunk Flexion (Palms on Floor):

Bending forward with knees completely straight, can you place your palms flat on the floor in front of your feet?

POSITIVE: Generalized Joint Hypermobility (GJH) Score: 7 / 9 Points

Meets Clinical Criterion 1 for Hypermobile Ehlers-Danlos Syndrome

Your score meets or exceeds the diagnostic threshold for Generalized Joint Hypermobility under the 2017 International Classification. This confirms widespread ligamentous and connective tissue laxity. When combined with orthostatic intolerance (POTS) and gastrointestinal / allergic reactivity (MCAS), this establishes the classic hEDS / POTS / MCAS clinical triad.

Hemodynamic & POTS Consequences:

Lax peripheral blood vessels allow massive blood pooling in the mesenteric bed and lower limbs upon standing. Standard POTS treatments must prioritize mechanical abdominal compression (30–40 mmHg) and volume expansion rather than relying solely on cardiac medications.

Physical Therapy Harm-Reduction:

Avoid aggressive joint stretching or yoga, which worsens joint instability and subluxations. Isometric strengthening, closed-chain exercises, and recumbent horizontal conditioning (Muldowney protocol) are essential to prevent spinal craniocervical instability.

Explore Craniocervical Instability (CCI) →

2. The Clinical Triad: hEDS + POTS + MCAS

Pathological Pillar Underlying Defect Clinical Presentation in ME/CFS
Hypermobile EDS (hEDS) Defective collagen & extracellular matrix structure Joint subluxations, velvet skin, stretchable veins, craniocervical instability
Dysautonomia / POTS Impaired venoconstriction & splanchnic pooling Tachycardia ≥ 30 bpm standing, cerebral hypoperfusion, severe brain fog
MCAS & Histamine Connective tissue mast cell hyper-reactivity Flushing, dermatographia, food/medication intolerances, gut dysbiosis

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