I haven't ridden the horse in nearly a month for a couple reasons. The biggest one being that the owner one day took the mare on too long of a trail ride and we were giving her a couple days off and more recently the horse was gone for a week long trail vacation. So when the owner rides, its almost always on trail.
Today I put the mare in the round pen for exercise. I've done this before with minimal head shaking but nothing beyond "normal" (not my words but the owners) for this horse. Today however the mare tossed her head in circles nearly every few steps the whole time I had her at the trot. I couldn't get her to stay in a canter very long either and the head tossing/shaking was present still. I'm not an Arab lover (no offense) so I'm far from an expert. I have noticed in my years that many toss their head more then other breeds but is the circle tossing at such a frequency as this mare ok? Is it worth the money and convincing of the owner for the Chiropractor to visit or is this a training issue?