I am so sorry about little Murphy. That just broke my heart to watch, so I can't imagine how your feeling.
My first thought was a seizure. Snoot had a seizure for the very first time about two months ago. It's the only one I've ever seen but it was nothing like this. However, I read alot online and this does seem like one type that I read about. I never realized how many differen't types there are. I'm so sorry he's going through this. We will keep you guys in our prayers. Give your sweet little boy kisses from all of us.
