Headshaking

[LadyRascasse]

I have recently been involved with a horse that developed head shaking this year and detiorated quite rapidly until it was even unhappy in its stable. The owners decided that it was dangerous and had it PTS. The post mortem found a large tumour on the sinus.

I doubt anyone would have cured that.

This is what I think my mare has, does anyone know what tests you can do to find out for sure (obviously before a post mortem!)