ESR indicates inflammation in the body. So does CRP.
ESR is your sedimentation rate. Google it. Should have been done immediately. Actemra is drug used with or without prednisone to bring down inflammation. That’s the brand name. Made by Astra Zeneca. Google Actemra. It is a biological. You need to read about this drug and GCA. You need to read about trials and new drugs for autoimmune diseases.