Most specific symptom of temporal aeritis?: (A) Visual loss, (B) Jaw claudication, (C) Temporal headache, (D) Polymyalgia rheumatica
Answer is B. Giant cell aeritis ( temporal aeritis ) is a chronic vasculitis of large and medium vessel aeries, usually affecting the cranial branches of aeries arising from aoic arch. Jaw claudication is an underrepoed, yet, a very specific symptom of GCA, with a high positive predictive value. Ref : Harrison's Principles of Internal medicine, 21st edition , Page 2188; NEJM, May 5, 2016, 1794-1795.