Equine headshaking syndrome causes severe facial pain that profoundly impairs quality of life, requiring persistent management effort.
Headshaking causes severe facial pain comparable to trigeminal neuralgia in humans - a condition considered among the most painful neuropathic conditions. Horses cannot communicate pain verbally, and the involuntary nature of the head movement makes the severity often underestimated. Quality of life assessment must be central to management decisions, as horses that cannot be made comfortable require honest consideration of euthanasia.