Eighty-one dogs with clinical signs and histological lesions characteristic of distemper encephalomyelitis were evaluated. Only dogs with Lenz inclusion bodies in the central nervous system were included in the study. High prevalent findings included: changes in postural reactions (87.65%), decreased tear production (83.95%), myoclonus (75.30%), paresis (69.12%), conjunctivitis (56.79%), chorioretinitis/digital and nasal hyperkeratosis (51.85%). Anemia (48.05%), lymphopenia (51.95%), and mild changes in the cerebrospinal fluid characterized by increase in total protein (77.33%) and lymphocytic pleocytosis (50.72%) were common laboratorial findings. Presence of Lenz inclusions bodies in tissues other than nervous system varied from 30 to 45%, with a higher frequence in the limph nodes. Other abnormalities in physical, neurological and laboratorial examinations were not helpful in establishing the diagnosis. Most animals examined were not properly vaccinated.
diseases of dogs; canine distemper; nervous system; diagnosis
