Quarter Horse

Malignant Hyperthermia (MH)

Malignant hyperthermia (MH) is a rare inherited disease that can cause a life-threatening condition triggered by anesthesia drugs.

Polysaccharide Storage Myopathy (PSSM)

Polysaccharide storage myopathy (PSSM) results in an abnormal accumulation of glycogen, causing “tying up”.

Glycogen Branching Enzyme Deficiency (GBED)

Glycogen branching enzyme deficiency is a fatal disease of developing fetuses or newborn foals. It is inherited in some breeds and a genetic test is available.

Hyperkalemic periodic paralysis (HYPP)

HYPP is a muscular disease caused by a genetic mutation that results in an excessive amount of potassium in the blood.

Hereditary Equine Regional Dermal Asthenia (HERDA)

Hereditary equine regional dermal asthenia is an inherited degenerative skin disease in Quarter Horses and related breeds.