Screening Scheme Description

DNA test - EF
Episodic Falling

Cavalier King Charles Spaniel

Details about the diseases

EF is a neurological condition, induced by exercise, excitement or frustration, in which muscle tone increases. This means the dog is unable to relax its muscles, causing the dog to become rigid and falls over.

Clinical signs

Affected dogs usually start to demonstrate clinical signs before one year of age, with most cases having their first episode aged 4-7 months. Clinical signs vary in severity ranging from mild, occasional falling to freezing or seizure-like episodes lasting hours. Severity of the episodes can increase or decrease as the dog gets older. There is no standard pattern to the attacks.

How it is inherited

The disease is described as a recessive condition. This means that a dog must inherit two copies of an abnormal gene (one from its mother and one from its father) before its health is affected. A dog that inherits only one copy of the abnormal gene (from its mother or its father) will have no signs of the disease, but will be a carrier and may pass the gene on to any offspring.

Which laboratories test for this condition?

A list of laboratories and DNA tests can be found at the following link

How to responsibly breed from your DNA tested dog

If, once your dog is DNA tested, you would like to find out what their DNA test results mean, or how to select the right mate to avoid producing affected puppies, then please read our breeding advice and information on the following link

How to find out if a potential mate has been DNA tested

The Kennel Club’s “Health Test Results Finder” allows you to find the results of DNA tests carried out as part of official Kennel Club DNA testing schemes for any dog on the Kennel Club’s breed register. To access this free health tool, please follow this link


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