There are some dogs that have Paroxysmal Dyskinesia episodes that do not fit the diagnosis of PGSD or idiopathic epilepsy. Paroxysmal Dyskinesia (PD) is an umbrella term given to a range of movement disorders, existing both in humans and domestic animals, characterized by intermittent episodes of involuntary motor movements that are debilitating, sometimes even on daily basis. These disorders were originally suspected to be seizure events, however, some differences in clinical presentation were noted. As opposed to seizures, many times during the episodes consciousness is intact, autonomic signs are absent and abnormal post-ictal behavior is not observed. The episodes can last minutes to hours which is uncommon for epileptic seizures.
