Atypical myopathy can be suspected when a part of or the totality of the clinical signs associated to this syndrome are present.  This suspicion will be enforced or infirmed by the realisation of a complete clinical examination and particular blood analyses. The definitive diagnosis will be made by a histological examination of muscle fibres of a post-mortem taken muscle sample.

Atypical myopathy can be suspected when a horse that lives most of the time on pasture, shows one or more of the following clinical signs (for more detail see the chapter “SICKNESS”, “CLINICAL SIGNS):

- WEAKNESS

- HORSE FOUND LAYING ON THE GRASS (OR DEAD)

- DIFFICULTY TO GET UP

- DARK COLORED URINE

- STIFFNESS

- RED OR PURPLE MUCOSAE

- DEPRESSED

- MUSCLE TREMORS

- DIFFICULTY TO STAY STANDING

- DIFFICULTY OR INABILITY TO WALK

- INCREASED HEART RATE

- DIFFICULTY TO BREATH

- SUDATION

- HYPOTHERMIA

- COLIC

- HORSE THAT STILL WANTS TO EAT

When you observe these clinical signs, call immediately your veterinarian so he can identify more specific clinical signs corresponding with the condition. Even though atypical myopathy is a severe condition, the horse generally still wants to eat.

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