Lyme disease is caused by a spirochete, Borrelia burgdorferi. A spirochete is a type of bacterium. Lyme disease is transmitted to dogs through the bite of a tick. Once in the blood stream, the Lyme disease organism is carried to many parts of the body and is likely to localize in joints.
encephalopathy is a general term describing a disease that affects the function or structure of your brain there are many types of encephalopathy and brain disease some types are permanent and some are temporary
brain disorder, encephalopathy. 1  nervous disorder, neurological disease, neurological disorder - a disorder of the nervous system. 2  epilepsy - a disorder of the central nervous system characterized by loss of consciousness and convulsions. 3  apraxia - inability to make purposeful movements.