Best of luck Emerson. My last jumper developed head shaking and it was just heart breaking. At the time (in the nineties) there was less known about it and I tried everything for him. Even bought a nebulizer. He was a tough guy but I ended up donating him to the 4H in Virginia where he led trail rides and he was later sold on to someone in upstate NY. I wish they knew then what they know now.
Sorry to hear this. fWIW, I have a mild headshaker Who seems to have benefitted from large doses (12g/day) of lysine. I started her on it when we went “grain free” and it took a while for me to realize how much better her symptoms became. I was able to ride outside without a nose net for the first time in years. She decided not to eat her supplements for a couple weeks, and I had to put the nose net back on.
Lysine is super cheap. Might be worth a try.
Sorry to hear that. Hopefully he will respond to whatever treatment/ prevention you do.