Giant Cell Arteritis Diagnosis Criteria Medical Algorithm

Evaluation

Age of patient

years

Does the patient have the onset of a new, localized headache?

Yes

Does the patient show tenderness to palpation over a temporal artery?

Yes

Does the temporal artery show a decreased pulse unrelated to arteriosclerosis of the carotid arteries?

Yes

Erythrocyte sedimentation rate by the Westergren method

mm/h

Does temporal artery biopsy show a vasculitis with a predominance of mononuclear cells or granulomatous inflammation?

Yes

Results

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Results Interpretation and Description References Next Steps

Data complete?

Number of factors present

Temporal (giant cell) arteritis likely present?

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Interpretation and Description

References

Next Steps in Evaluation

Diagnosis

Risk Factors
Imaging Studies
Laboratory Tests
Other Testing
Criteria For Diagnosis
Differential Diagnosis And Mimics, Red Flags
- Risk Factors for Giant Cell Arteritis in Women
- Clinical Features of Temporal (Giant Cell) Arteritis

Therapy

Options
- Temporal Arteritis Evaluation
Prevention

Specialty

Immunology/Rheumatology

Objective

criteria for diagnosis

ICD-10

M31.5 - Giant cell arteritis with polymyalgia rheumatica
M31.6 - Other giant cell arteritis

American College of Rheumatology (ACR) Criteria for the Diagnosis of Temporal (Giant Cell) Arteritis

Purpose: To diagnose temporal (giant cell) arteritis by the presence of certain findings.