Stiff-Person Syndrome Assessment

Evaluate likelihood of Stiff-Person Syndrome using axial rigidity, episodic spasms, anti-GAD antibody status, and trigger sensitivity criteria.

Weight
Height
Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Evaluate likelihood of Stiff-Person Syndrome using axial rigidity, episodic spasms, anti-GAD antibody status, and trigger sensitivity criteria

Each component has a specific meaning:

  • Axial rigidity — The axial rigidity recorded for the scenario being assessed.
  • Episodic spasms — The episodic spasms recorded for the scenario being assessed.
  • Anti-GAD antibody status — The anti-gad antibody status recorded for the scenario being assessed.
  • Trigger sensitivity criteria — The trigger sensitivity criteria recorded for the scenario being assessed.

Note: Interpret the stiff-person assessment result against the thresholds and context described above.

How to Use

Enter the axial rigidity, episodic spasms, anti-GAD antibody status, trigger sensitivity criteria for the scenario you are assessing. Evaluate likelihood of Stiff-Person Syndrome using axial rigidity, episodic spasms, anti-GAD antibody status, and trigger sensitivity criteria. Use the stiff-person assessment result to inform your calculation.

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Frequently Asked Questions