PEST (Psoriasis Epidemiology Screening Tool)

Short screening questionnaire for psoriatic arthritis in people with psoriasis. Score 1 point per Yes.

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.

Score 1 point for each Yes

Have you ever had a swollen joint or joints?+1

Has a doctor ever told you that you have arthritis?+1

Do your fingernails or toenails have holes or pits?+1

Have you had pain in your heel?+1

Have you had a finger or toe that was completely swollen and painful for no apparent reason?+1

Live result

0

/ 5

Lower screen (0–2)

A positive PEST screen does not diagnose psoriatic arthritis. It indicates that rheumatology assessment should be considered.

Sources

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.

CASPAR Criteria for Psoriatic Arthritis

Classification criteria for psoriatic arthritis with the CASPAR psoriasis rule.

Open tool

Rheumatoid Arthritis · Classification criteria

2010 ACR/EULAR Classification Criteria for RA

Score joint involvement, serology, acute-phase reactants and duration to classify RA.

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Rheumatoid Arthritis · Disease activity score

DAS28-CRP

28-joint disease activity score using CRP, tender/swollen joint counts and patient global.

Open tool

Rheumatoid Arthritis · Disease activity score