Absence seizures with myoclonic features in a juvenile Chihuahua dog

Long-term video-EEG was recorded for an eight-month-old Chihuahua dog with recurrent episodes of altered behaviour associated with head and nose twitching. Each episode lasted one to two seconds, multiple times per day before treatment. Ictal EEG showed generalised bilaterally synchronous 4 Hz spike-and-wave complexes during the absence-like event, along with rhythmically correlated head and nose twitching. We present video documentation of such attacks and discuss their similarities to human epilepsy with myoclonic absences. [Published with video sequences]