What are the Hurley stages of hidradenitis suppurativa?

Stage I: single/multiple abscesses without sinus tracts or scarring; Stage II: recurrent abscesses with sinus tracts and scarring; Stage III: diffuse abscesses, extensive sinus tracts, and scarring over entire region.

When is adalimumab indicated for HS?

Adalimumab (Humira) is FDA-approved for moderate-severe HS (Hurley II-III) refractory to antibiotics; HiSCR50 in 45-60% vs 26-28% placebo; dosing: 160 mg on day 1, 80 mg day 15, then 40 mg weekly.

What is the IHS4 score for HS severity?

IHS4 = (1 × #nodules) + (2 × #abscesses) + (4 × #draining fistulas/tunnels); IHS4 <3: mild; 4-10: moderate; ≥11: severe; used for monitoring treatment response alongside HiSCR response criterion.

What role does weight loss play in HS management?

BMI reduction >10% is associated with HiSCR response in overweight/obese HS patients; weight loss reduces androgen-driven sebaceous gland activity; smoking cessation is equally important as HS is markedly worsened by smoking.

What surgical procedures are used in HS management?

Incision and drainage: temporary relief only; deroofing (unroofing) of sinus tracts: better long-term outcome; wide surgical excision: lowest recurrence rate (Hurley III); CO2 laser; skin-tissue-sparing excision with electrosurgical peeling (STEEP) technique.

Hidradenitis Suppurativa Hurley Staging and Treatment Selection

Classifies hidradenitis suppurativa severity using Hurley staging (I-III) and IHS4 score, determining adalimumab/secukinumab eligibility and defining surgical management thresholds.

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.

How It Works

Classifies hidradenitis suppurativa severity using Hurley staging (I-III) and IHS4 score, determining adalimumab/secukinumab eligibility and defining surgical management thresholds

Each component has a specific meaning:

Hurley staging — The hurley staging recorded for the patient or scenario being assessed.
Determining adalimumab/secukinumab eligibility — The determining adalimumab/secukinumab eligibility recorded for the patient or scenario being assessed.
Defining surgical management thresholds — The defining surgical management thresholds recorded for the patient or scenario being assessed.

Note: Interpret the hs hurley stage result against the clinical thresholds and context described above.

How to Use

Enter the Hurley staging, determining adalimumab/secukinumab eligibility, defining surgical management thresholds for the patient or scenario you are assessing. Classifies hidradenitis suppurativa severity using Hurley staging (I-III) and IHS4 score, determining adalimumab/secukinumab eligibility and defining surgical management thresholds. Use the hs hurley stage result to inform your clinical assessment.

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