Hello everyone. I am new to this site as I found it while looking up information. For approximately six weeks now I have had symptoms of GCA. My GP agreed and since my blood showed large platelets around Dec 10th, he told me to have my ESR and CRP tested at the ER. ESR was normal and CRP was low. I saw a rheumatologist who did an exam and said he doesn't think I have it (based on my age). I have swelling in the arteries on the left side of my head. They're not very visible, but I can feel them and I have a piercing and throbbing headache in the same areas, along with pain near my ear when I chew. The pain just started again today after subsiding for about four weeks. I also have pain in the left side of my chest, just under my collar bone, spreading to my shoulder and down my arm. I'm very worried and believe I have GCA as I was just told on Thursday that I tested positive for Lyme, Babesia, and CMV last month. I know that Lyme can cause GCA sometimes, but I don't know what the protocol would be since I just started doxycycline hyclate Thursday night. Everything I'm reading seems to say you can't take steroids with Lyme, so I'm not sure what to do.