Two years into PMR/GCA and on 10mg pred last Friday had a floppy left arm for 3 or 4 minutes saw GP on an emergency appointment who said she thought it was a TIA made a request for an appointment at stroke clinic. Appointment arranged by phone for next morning. The doc said there was probably a problem with my right carotid artery, had a Doppler scan, result right carotid artery fit and well but left carotid is narrowed. Given lots of advice and prescription for clopidogrel. (Am allergic to statins) Does anyone out there know why it's the wrong artery?