Myelopathy in Rabbits: Spinal Cord Disease and Progressive Weakness

Myelopathy is a broad term for disease, damage, or dysfunction of the spinal cord. In rabbits, that can interfere with the nerve signals that control movement, balance, bladder function, and pain sensation. Some rabbits develop a slow, progressive weakness over weeks to months. Others have a sudden crisis after trauma, such as a forceful kick, fall, or rough restraint.

Because rabbits rely so heavily on their strong back legs, spinal cord problems often show up first in the hind end. A rabbit may stop hopping normally, drag one or both rear feet, sit in an unusual posture, or become unable to rise. In more severe cases, urinary or fecal incontinence can happen because the nerves that control sphincter function are affected.

Myelopathy is not one single diagnosis. It is a clinical problem with several possible causes, including vertebral fracture or dislocation, inflammation, infection, degenerative spinal disease, and less commonly tumors or congenital abnormalities. Your vet's job is to sort out which process is most likely in your rabbit and what level of care fits your rabbit's condition and your family's goals.

One of the best-known causes is spinal trauma. Rabbits have powerful hind legs and relatively delicate spines, so a sudden kick against restraint, a fall from someone's arms, or struggling during handling can fracture or dislocate vertebrae. This may compress or sever the spinal cord and can cause sudden paresis, paralysis, or incontinence.

Infectious and inflammatory disease can also affect the spinal cord. A common example is Encephalitozoon cuniculi, a microsporidian parasite that can involve the nervous system, kidneys, and eyes. Not every exposed rabbit becomes sick, and testing can be tricky, but it remains an important consideration when a rabbit has neurologic signs.

Other possible causes include degenerative spinal changes such as spondylosis, vertebral infection, tumors, congenital spinal abnormalities, and severe arthritis or orthopedic disease that can mimic neurologic weakness. That is why hind-end weakness should not be assumed to be "old age." Your vet will look at the whole rabbit, including pain, posture, reflexes, and bladder function, before deciding what is most likely.

Diagnosis starts with a careful history and physical exam. Your vet will want to know whether the weakness came on suddenly or gradually, whether there was any fall or struggle, and whether your rabbit is still eating, urinating, and passing stool normally. A neurologic exam helps localize whether the problem is likely in the spinal cord, brain, peripheral nerves, or musculoskeletal system.

Basic testing often includes spinal radiographs, blood work, and sometimes urinalysis. X-rays can identify fractures, dislocations, or obvious degenerative changes, although they do not show the spinal cord itself well. If E. cuniculi is on the list of possibilities, your vet may discuss antibody testing, but results need careful interpretation because exposure does not always mean active disease.

For more complex cases, referral imaging such as CT or MRI may be recommended to look for spinal cord compression, soft tissue injury, infection, or masses. Sedation or anesthesia is often needed for high-quality imaging in rabbits, so your vet will balance the value of more information against your rabbit's stability and your care goals. In some rabbits, a presumptive diagnosis is made and treatment is started based on the pattern of signs and response to care.

Not every cause of myelopathy can be prevented, but trauma prevention makes a real difference. Always support both the chest and hindquarters when lifting a rabbit, and keep handling low to the floor or over a secure surface. Many serious spinal injuries happen when a frightened rabbit twists or kicks while being carried.

A rabbit-safe home also helps. Use non-slip flooring, block access to high furniture, and make ramps gentle and stable. Keep housing clean and roomy enough for normal movement, and maintain a healthy body condition so extra weight does not add stress to joints and the spine.

Routine veterinary care matters too. Early evaluation of subtle mobility changes, urine scald, sore hocks, or reduced activity may catch problems before they become severe. If your rabbit has a history of neurologic disease, ask your vet about monitoring, hygiene, and supportive care steps tailored to your rabbit's needs.