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Paralysis in Cats

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Loss of Body Movement in Cats

 

A cat’s ability to move around and perform daily activities depends on the ability of its brain, spine, nerves and muscles to coordinate in tandem. This complex communication system involves nerves in the brain sending messages about the outer environment to the body, and the body sending messages to the brain regarding what it is actually experiencing in the environment. These messages are transmitted through nerves in the spinal cord, which is embedded in the vertebral, or spinal, column. Together, the nerves in the brain and spinal cord make up the body's central nervous system. A trauma to any part of the nerve pathway can result in miscommunication or complete lack of communication to the brain or body, and an inability to coordinate the body's movements.

 

The spinal column itself consists of a set of 24 bones called the vertebrae, which are separated from each other by small cushions called intervertebral discs. Together the vertebrae and intervertebral discs protect the spine from damage. Trauma to the vertebrae or disks can create a vulnerability to the nerves within the spinal cord, resulting in further trauma to the neural pathway.

 

When a cat is experiencing paralyzation, it is often because communications between the spinal cord and the brain have been disrupted. In some cases, the cat will not be able to move its legs at all (paralysis), and in other cases, there may still be some communication between the brain and spine and the cat will only appear to be weak, or will have difficulty moving its legs, a condition called paresis – partial paralysis. There are also cases where a cat may be paralyzed in all four legs (tetraplegia), and in others, the cat may be able to control the movement in some of its legs but not all. This is determined by the location in the brain, spine, nerves, or muscles that the trauma has occurred.

 

Symptoms and Types

 

  • Not able to move all four legs (tetraplegia)
  • Not able to move the rear legs (paraplegia)
  • Walking with the front feet while dragging the rear legs
  • Possibly pain in the neck, spine or legs
  • Not able to urinate
  • Constipation
  • Not able to control urination, dribbling urine
  • Not able to control defecation

 

Causes

 

  • Slipped discs in the back (intervertebral disc disease)
  • Infection in the bones of the spine (vertebrae)
  • Infection or inflammation in the spine
  • Toxoplasmosis
  • Feline infectious peritonitis
  • Cryptococcus
  • Infection or inflammation in the muscles (polymyositis)
  • Inflammation in nerves (polyneuritis)
  • Blocked blood flow to the spine (embolus)
  • Blocked blood flow to the rear legs (aortic embolus)
  • Tumors or cancer in the spine or brain
  • Tick bites (tick paralysis)
  • Bacterial toxins (Botulism)
  • Injury to the spine
  • Malformation of the spine or vertebrae

 

 

Diagnosis

 

You will need to give a thorough history of your cat's health, onset of symptoms, and possible incidents that might have led to this condition, such as tick bites, or injuries that occurred while jumping or falling. During the examination, your veterinarian will pay close attention to how well your cat is able to move its legs, and how well it is able to respond to reflex tests. The veterinarian will also test your cat's ability to feel pain in all four legs, checking the head, spine, and legs for signs of pain and alertness to touch.

 

All of these things will help your veterinarian to locate where in your cat's spine, nerves, or muscles it is having a problem. Basic laboratory tests, including a complete blood count, biochemical profile and urine analysis will be conducted, and may determine if your cat has an infection - bacterial, viral, or toxin based - that is interfering with the nerve pathway. X-ray images of your cat's spine may show evidence of an infection or malformation of the vertebrae, or a slipped disc that is pressing against the spinal cord. Other conditions that can lead to disruption of the nerve pathways may be apparent on an x-ray, such as tumors, blockages, or inflamed nerves.

 

In some cases, your veterinarian may order a special x-ray called a myelogram. This process uses injection of a contrasting agent (dye) into the spinal column, followed by x-ray images which will allow the doctor to see the spinal cord and vertebrae in more detail. If these imaging techniques are not helpful, your veterinarian may order a computed tomography (CT) or magnetic resonance image (MRI) of your cat's brain and spine, both of which give an extremely detailed picture of your cat's brain and spine. In some cases, your veterinarian may take a sample of the fluid from around your cat's spine for analysis, or samples from the muscles or nerve fibers for biopsy. These analyses may determine the presence of an infection in the brain or spine.

 

 

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