I realized there was a problem with my new puppy very quickly (within 4 weeks). I had seen a total of 3 different vets. No one mentioned CM/SM and sent me home saying my puppy was fine. I took it into my own hands and googled "Cavalier Neck Scratching". That was the first time I had ever heard of SM/CM. I brought several print out's about SM/CM to the the 3rd vet but he seemed skepticacl and didn't want to send us to a neurologist. He wanted to send us to an intern of internal medicine. Lots of disagreements and stress later I was finally able to get the referal I needed to a neurologist. Sure enough the MRI on my 6 month old puppy showed moderate CM. He is on medication 3 times a day and is nearly episode free!