Horse breeding
Due to the heavy influx of American Quarter Horse breeding, some Paints may also carry genetic disorders such as hyperkalemic periodic paralysis (HYPP), hereditary equine regional dermal asthenia (HERDA), equine polysaccharide storage myopathy (called PSSM - polysaccharide storage myopathy - in Paints, Quarter Horses and Appaloosas), malignant hyperthermia (MH) and glycogen branching enzyme deficiency (GBED). The influence of Thoroughbred breeding puts some bloodlines at higher risk for Wobbler's syndrome.