The duke recorded that they were able to keep up with a trotting horse. His estate was named Blenheim in honor of his victory at the Battle of Blenheim. This is known as the founder effect and is the likely cause of the prevalence of MVD in the breed. The health problems shared with this breed include mitral valve disease, luxating patella, and hereditary eye issues such as cataracts and retinal dysplasia. Episodic Falling causes 'exercise-induced paroxysmal hypertonicity' meaning that there is increased muscle tone in the dog and the muscles cannot relax. Previously thought to be a muscular disorder, it is now known to be neurological. Severity of symptoms can range from mild, occasional falling to freezing to seizure-like episodes lasting hours. Episodes can become more or less severe as the dog gets older and there is no standard pattern to the attacks. The onset of symptoms usually occurs when a dog is between 4 months and 4 years of age.
MVD|'exercise-induced paroxysmal hypertonicity' mitral valve disease, luxating patella,|cataracts|retinal dysplasia.|'exercise-induced paroxysmal hypertonicity' paroxysmal hypertonicity'
MVD|'exercise-induced paroxysmal hypertonicity' mitral valve disease, luxating patella,|cataracts|retinal dysplasia.|'exercise-induced paroxysmal hypertonicity' paroxysmal hypertonicity'