The rheumy I saw went over the symptoms of GCA when she officially gave me the diagnosis of PMR this month. I worry about this constantly and would like to know how anyone knew they had this or when to seek a doctor? Also, do you have the chance of having GCA develop forever with PMR? I bought the book by Kate Gilbert and felt more scared after reading. The symptoms I read about I have due to other conditions, so how do you know? I have lots of bad headaches due to allergies & lots of sinus issues for many, many years, I have pain in my jaw because I have TMJ & wear a night guard to keep me from grinding my teeth, I wear contacts to correct my vision, so some of the vision symptoms I could say I have had due to again, allergies or just my contacts. I have had random spells of dizziness/vertigo for many years and had a CT scan early in 2016 to rule out any problems. The results from that said no problems, allergies could cause this as well as stress. I had a flu virus this week and had to miss work one day. My daughter had the flu the day after I had visited her family, so I felt certain I caught this from her. But I honestly worried the whole day what if this GCA now not the flu? I sure can't afford to go to the Emergency Room at our local hospital every time I worry about a symptom as this would cost me thousands of dollars. So how do you know? The 10mg of Prednisone is working well to keep my PMR pain under control and I am able to go about my life as normal. I know from reading lots of these posts I am very lucky in that, but the worry is constantly with me. Any advice? Thanks!