HS IHS4 International Hidradenitis Scoring

Calculate IHS4 (International Hidradenitis Suppurativa Severity Score System) from nodule count x1, abscess count x2, and draining tunnels x4. Score >=11 indicates severe HS.

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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

Calculate IHS4 (International Hidradenitis Suppurativa Severity Score System) from nodule count x1, abscess count x2, and draining tunnels x4. Score >=11 indicates severe HS

Each component has a specific meaning:

  • Nodule count x1 — The nodule count x1 recorded for the scenario being assessed.
  • Abscess count x2 — The abscess count x2 recorded for the scenario being assessed.
  • Draining tunnels x4 — The draining tunnels x4 recorded for the scenario being assessed.

Note: Interpret the ihs4 score result against the thresholds and context described above.

How to Use

Enter the nodule count x1, abscess count x2, draining tunnels x4 for the scenario you are assessing. Calculate IHS4 (International Hidradenitis Suppurativa Severity Score System) from nodule count x1, abscess count x2, and draining tunnels x4. Score >=11 indicates severe HS. Use the ihs4 score result to inform your calculation.

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Frequently Asked Questions