BASDAI

Rate each item from 0 (none) to 10 (very severe) based on the last week.

For clinicians only. This tool is for healthcare professionals and clinical education only. It does not diagnose, replace clinical judgement, or replace specialist assessment. Any decisions about a patient must be based on full clinical assessment, investigations where appropriate, and current clinical guidelines.

Past week — 0 (none) to 10 (very severe)

Q1. Fatigue / tiredness

0 / 10

Q2. Spinal pain (neck, back or hips)

0 / 10

Q3. Peripheral joint pain or swelling

0 / 10

Q4. Localised tenderness / enthesitis (areas painful to touch or pressure)

0 / 10

Q5. Severity of morning stiffness

0 / 10

Q6. Duration of morning stiffness

0 / 10

Live result

0.00

Score

Lower activity (0.00)

BASDAI ≥4 is commonly used as a marker of active disease in many treatment pathways, but is not diagnostic by itself.

Interpretation

Formula: (Q1 + Q2 + Q3 + Q4 + (Q5 + Q6)/2) / 5. Higher = more active symptoms.

Sources

Bath Indices guide (NASS)

For clinicians only. This tool is for healthcare professionals and clinical education only. It does not diagnose, replace clinical judgement, or replace specialist assessment. Any decisions about a patient must be based on full clinical assessment, investigations where appropriate, and current clinical guidelines.

ASAS Criteria for Axial Spondyloarthritis

Imaging and clinical arms for axial spondyloarthritis classification.

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Spondyloarthritis · Classification criteria

ASAS Criteria for Peripheral Spondyloarthritis

Classification criteria for peripheral SpA when arthritis, enthesitis or dactylitis is present.

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Spondyloarthritis · Functional index

BASFI

Bath Ankylosing Spondylitis Functional Index. 10 activities of daily living.

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Spondyloarthritis · Metrology index