Snapshot A 60-year-old woman presents to her physician's office for headache and muscle weakness. She reports that she usually never has headaches but recently started experiencing headaches in the morning about 2 weeks ago. She also reports feeling very weak and tired in the mornings and cannot even raise her arms to brush her hair. Physical exam shows that she has normal strength and normal range of movement. She is sent for further laboratory workup for inflammatory disease. Introduction Clinical definition login to view 1 more bullet Epidemiology Demographics login to view 2 more bullets Risk factors login to view 2 more bullets ETIOLOGY Pathogenesis login to view 1 more bullet Associated conditions login to view 1 more bullet Presentation Symptoms login to view 8 more bullets Physical exam login to view 3 more bullets Imaging Ultrasound of shoulder login to view 5 more bullets Studies Labs login to view 5 more bullets Differential Rheumatoid arthritis Adhesive capsulitis Fibromylagia Corticosteroid-induced myopathy login to view 2 more bullets DIAGNOSIS Making the diagnosis login to view 1 more bullet Treatment Management approach login to view 2 more bullets Medical login to view 9 more bullets Complications Blindness caused by giant cell arteritis Prognosis ~50% of patients experience relapse