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A lameness exam is used to try to pinpoint the cause of lameness in the horse, which subsequently guides treatment. It is the first step to evaluate decreased performance in an equine athlete, even if the horse does not appear overtly lame, to rule out any pain-associated cause. Lameness exams are also a key component of the pre-purchase ...
Equine polysaccharide storage myopathy (EPSM, PSSM, EPSSM) is a hereditary glycogen storage disease of horses that causes exertional rhabdomyolysis.It is currently known to affect the following breeds American Quarter Horses, American Paint Horses, Warmbloods, Cobs, Dales Ponies, Thoroughbreds, Arabians, New Forest ponies, and a large number of Heavy horse breeds.
However, any horse that can store excess amounts of glycogen, usually genetic, can develop this form of ER. [1] Recurrent Exertional Rhabdomyolysis (RER) is commonly found in breeds that are high strung such as Arabians and thoroughbreds. However, any horse can develop this type of ER if it displays abnormal muscle contractions. [1]
Shivers, or equine shivering, is a rare, progressive neuromuscular disorder of horses. It is characterized by muscle tremors, difficulty holding up the hind limbs, and an unusual gait when the horse is asked to move backwards. Shivers is poorly understood and no effective treatment is available at this time.
Equine protozoal myeloencephalitis (EPM) is a disease that affects the central nervous system of horses. It is caused by a protozoal infection that is brought about by the apicomplexan parasites Sarcocystis neurona or Neospora hughesi. Most cases are caused by S. neurona. The lifecycle and transmission of N. hughesi is not well understood. [1]
Navicular syndrome, often called navicular disease, is a syndrome of lameness problems in horses. It most commonly describes an inflammation or degeneration of the navicular bone and its surrounding tissues, usually on the front feet.
Within hours of first symptoms horse may be unable to stand and in 72 hours of the onset of signs mortalities may occur. [16] [13] [1] The mortality rate of atypical myopathy is high; only 30-40% of affected horses survive. [9] EAM affected horse’s urine is dark red or brown. Sweating and muscle trembling can be observed while moving.
Grass sickness, alternatively termed equine dysautonomia, is a rare but predominantly fatal illness in horses. Grass sickness may affect all types of horse, pony and donkey , and has affected some well known horses including the thoroughbred stallions Dubai Millennium , Moorestyle and Mister Baileys .