<prompt> Patient present with severe headache with the following sign. Diagnosis?Giant cell arteritisWegners granulomatosusMicroscopic polyangiitisTakayasu arteritis  <response>: Ans. A. Giant Cell ArteritisImage Shows Enlarged Temporal Artery Age 50yrs New onset localized headache Temporal: abnormalities- Decreased pulse- Tenderness and Nodules and thickening Increased ESR 50 Positive temporal: biopsy panarteritis, proliferation of the intima and fragmentation of internal elastic lamina 