Signs and Evidence

Making clinical sense of scientific data


Beware of the limitations of this tool


Choose the relevant clinical signs you want to include in the calculation of posttest probabilities. The strongest signs are listed the highest.


1Jaw claudication
2Temporal artery pain

To further investigations

Select the conditions you want to compare

Pretest probabilities will be calculated based on averages from relevant studies.

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Age > 55

Sources used:

1.Ryan D et al. Management of the Patient with Suspected Temporal Arteritis. Ophthalmology 2005;112:744–756
2.Battista NA et al. Is it giant cell arteritis? A retrospective audit on temporal artery biopsy for giant cell arteritis. Malta Medical School Gazette Volume 01 Issue 02 2017
3.Diamantopoulos AP et al. Diagnostic Value of Color Doppler Ultrasonography of Temporal Arteries and Large Vessels in Giant Cell Arteritis: A Consecutive Case Series. Arthritis Care & Research Vol. 66, No. 1, January 2014, pp 113–119
4.Costello F et al. Thrombocytosis in giant cell arteritis: Diagnostic importance. Submitted for publication.
5.Yates M et al. The prevalence of giant cell arteritis and polymyalgia rheumatica in a UK primary care population. BMC Musculoskelet Disord. 2016; 17: 285