This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Medicine
All of the following are true regarding Temporal arteritis except 
Select and explain. 
A. Age > 50 years, B. Unilateral headache, C. Diagnosed by measuring high ESR, D. Complicated by ischemic optic neuropathy
B: Unilateral headache
Answer: B: Unilateral headache 
Explanation: (B) Unilateral headache # Giant cell arteritis or Cranial arteritis or Temporal arteritis> Occurs almost exclusively in individuals > 50 years> The disease is characterized by the complex of fever, anemia, high ESR, and headaches in a patient over the age of 50 years.> A well recognized & dreaded complication of giant cell arteritis, particularly in untreated patients, is ischemic optic neuropathy, which may lead to serious visual symptoms, even sudden blindness in some patients.