Table 1

 1990 American College of Rheumatology criteria for the classification of giant cell (temporal) arteritis (traditional format)

1Age at disease onset >50 yearsDevelopment of symptoms or findings beginning at age 50 or older
2New headacheNew onset of or new type of localised pain in the head
3Temporal artery abnormalityTemporal artery tenderness to palpation or decreased pulsation, unrelated to arteriosclerosis of cervical arteries
4Elevated ESR>50 mm in the first hour by the Westergren method
5Abnormal artery biopsyBiopsy specimen with artery showing vasculitis characterised by a predominance of mononuclear cell infiltration or granulomatous inflammation, usually with multinucleated giant cells