@brigid4 I’m so sorry about your husband (and your) situation. I used every doctor I had to try and get a referral to a vascular neurologist, and kept striking out because their first question is: “when did you have a stroke?” I reply honestly that my neurologist could not find any blockage in my MRI or CT angiogram, but I’ve had stroke symptoms (according to Mayo Clinic, Cleveland clinic, etc.,) for months and now two years. I finally started writing my own referral letters that my doctor could send. Then I began calling and sending my letters directly to local vascular neurologists at large facilities, like Baylor Scott & White, Methodist, and others. I finally got a call and appointment (a month from tomorrow) from a vascular neurologist who received a referral from my doctor and me. I don’t know if any of this helps you, but if you do decide to send letters, I would make them as concise as possible, stating how your husband‘s symptoms mimic those listed on sites like Mayo Clinic. -Best of luck to you!