What is PRC? I started this journey 6 years ago and there is nothing left for me to try except the blood patches. There is a Danish doctor at Cedar Sinai who sews up the holes if they are, in fact there. I could never make that trip. My friend tried Mayo in Florida with no luck. I don't think they know how to help us. I have migraine with aura but New Daily Persistent Headache is what keeps me on the couch every day. Now my toes are getting numb from this sedentary life. It all sucks. Yes, I will keep you posted. Thanks for caring.