A slow, progressive inflammatory disease of the liver, cirrhosis of the liver results. A malformation of blood vessels in the liver or an abnormal communication between the arteries and veins in the liver. A condition where the neurons in the cerebellum part of the brain and parts of the spinal cord are malformed and eventually malfunction. Results in progressive neurologic signs, including incoordination, ataxia, paralysis and generally death. Affected Bernese Mountain Dog puppies develop signs of progressive cerebellar disease, including progressive ataxia with strength and head bobbing.
Puppies are unable to walk without falling backwards or sideways.
Hydrocephalus A condition where there is an abnormal accumulation of fluid in the ventricles of the brain. A series of Bernese Mountain dogs developed a tremor starting at 2-8 weeks of age. This is a fine tremor which affects both the limbs and head. It becomes worse with excitement and disappears with sleep. There is also mild weakness, high tail carriage and a stiff action of the hind legs.