Episodic Falling (EF)
Episodic Falling is a genetic neurological disorder found in Cavalier King Charles Spaniels.
Episodes are usually triggered by exercise, stress or excitement and are characterised by increased muscle tone and stiffness throughout the thoracic and pelvic limbs resulting in a characteristic 'deer-stalking' position and or collapse. The onset of symptoms is usually between fourteen weeks and four years of age but may appear at any age. Clinical symptoms 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.
The disease is also known as Exercise-Induced Paroxysmal Hypertonicity, Falling Cavaliers and Collapsing Cavalier Syndrome.