Vasculitis Activity Score Calculator

Calculate the Birmingham Vasculitis Activity Score (BVAS) to assess vasculitis disease activity across 9 organ systems.

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About This Tool

The BVAS (Birmingham Vasculitis Activity Score) calculator is a clinical tool used to assess disease activity in patients with systemic vasculitis. This online calculator allows healthcare professionals to score manifestations across 9 organ systems: constitutional, cutaneous, mucous membranes/eyes, ear/nose/throat, chest, cardiovascular, abdominal, renal, and nervous system. Each item is scored based on predefined criteria, with the total score indicating overall disease activity. Higher scores correlate with more active disease. This tool follows the standard BVAS v3 scoring system and provides immediate calculation with detailed breakdown.

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How to Use

Review each of the 9 organ system sections
Select all applicable manifestations for the patient
For each selected manifestation, enter the score (typically 1 for new/worse, 2 for persistent)
Click 'Calculate BVAS Score' to compute the total
View the detailed score breakdown and interpretation in the results section

Frequently Asked Questions

Find Quick Answers

What is BVAS used for?

BVAS (Birmingham Vasculitis Activity Score) is a standardized clinical tool used to assess disease activity in patients with systemic vasculitis, helping guide treatment decisions and monitor response to therapy.

How is the BVAS score interpreted?

Scores range from 0 to 63. 0-5: Minimal activity, 6-12: Mild activity, 13-20: Moderate activity, 21+: Severe activity. Higher scores indicate more active disease requiring more aggressive treatment.

Which vasculitis types can BVAS assess?

BVAS is validated for ANCA-associated vasculitis (Granulomatosis with polyangiitis, Microscopic polyangiitis, Eosinophilic granulomatosis with polyangiitis) and other systemic vasculitides.

How often should BVAS be calculated?

Typically at diagnosis and during follow-up visits (every 1-3 months) to monitor disease activity and treatment response.

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