A 50-year old female presents with sudden blindness .There is Scalp tenderness. There is history of pain while combing the hair. Temporal artery biopsy shows intimal thickening with granulomatous inflammation. Diagnosis is: (A) Giant cell arteritis, (B) Takayasu arteritis, (C) Polyarteritis nodosa, (D) Microscopic Polyangtis
Answer is A. Blindness, Scalp tenderness, Jaw claudication, are feature of Giant cell ateritis.