Equine headshaking syndrome causes involuntary and painful facial pain responses in horses. It is frequently misdiagnosed as a behavioural problem, causing horses to suffer without appropriate management.
Headshaking syndrome is a welfare crisis because affected horses experience genuine facial pain that is often dismissed as naughtiness or evasion. Horses that cannot be ridden without violent headshaking behaviour are frequently labelled difficult and subjected to increasingly coercive training approaches that worsen their suffering. The delayed average time to diagnosis — often years — means horses experience prolonged pain without recognition or treatment. Recognition of headshaking as a pain syndrome rather than a behavioural problem transforms welfare outcomes. Even when definitive treatment is unavailable, appropriate management including avoiding triggering conditions and using protective equipment significantly reduces daily suffering.