What are the red flags to avoid when buying a dressage horse?

Red flags in a dressage horse purchase represent specific combinations of characteristics, histories, and behavioral patterns that significantly increase the risk of the purchase not meeting the buyer's expectations — either because the horse has limitations that will prevent it from developing as intended, because it has health issues that will create management and financial challenges, or because the behavioral profile is mismatched with the buyer's current skill level. A horse that shows tension, resistance, or significant resistance to the contact during the trial ride should be evaluated carefully: some resistance reflects training that is currently challenging and will resolve with correct work, while some resistance reflects a deep-seated behavioral pattern that training intensity has produced and that will be very difficult to address. A horse that switches from appearing very sensitive and expressive in the demo ride by the selling trainer to being flat, unresponsive, or difficult under the buyer's ride — a dramatic performance difference between seller and buyer — should raise questions about whether the horse's performance depends on exceptional riding skill that the buyer does not currently have. Hock changes visible on radiographs — the progression of changes in the hock joints that is common in dressage horses — should be carefully assessed for their current significance and their likely progression, as hock issues are the single most common soundness limiting factor in upper-level dressage horses. A very tight, restricted back that shows minimal swing in any gaits indicates either current back soreness or a structural tendency that will make it very difficult to develop the throughness and collection that dressage requires. A horse with a history of repeated lameness treatments, repeated back injections, or repeated resistance issues that the seller has managed through interventions rather than resolved through training deserves particular scrutiny. Finally, a seller who is unwilling to allow an independent pre-purchase examination is displaying a pattern that warrants serious concern regardless of how impressive the horse appears during the viewing.