@chiarthritis: Giant cell arteritis is a medical emergency. If you are over 50 and develop a new headache, jaw pain while chewing, or any change in your vision, seek immediate medical attention. Prompt treatment may prevent permanent vision loss, while a temporal artery biopsy can help confirm the diagnosis. #GiantCellArteritis #VisionLoss #AutoimmuneDisease #Rheumatology #PatientEducation