The association between polymyalgia rheumatica (PMR) and temporal arteritis is one of the most intriguing issues among rheumatic diseases.1 In fact, as Harten et al pointed out in their letter, classic PMR may be present in up to 50% of patients with biopsy-proved temporal arteritis.2-4 The search for the best laboratory tests to predict ominous complications, mainly visual or cerebrovascular ones, in patients with PMR and associated temporal arteritis has been discussed for many years. In our experience, patients with PMR and "inappropriately" low ESRs do not develop complications of temporal arteritis.5
González-Gay MA, García-Porrúa C, Vázquez-Caruncho M. Thrombocytosis in Polymyalgia Rheumatica: An Additional Diagnostic Criterion and Possible Risk Factor for Ischemic Complications?—Reply. Arch Intern Med. 1998;158(1):95–96. doi:
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