The quality of life and life expectancy of dogs with brain damage is determined by the degree and cause of the damage, which is usually caused by external factors such as intracranial haemorrhage or lack of oxygen and intracranial hypertension, such as falls, impacts, drowning, poisoning, heat stroke, etc. This is followed by viral infections, such as canine distemper virus. Finally, there is the relatively uncommon disease of meningitis. If there is only a simple shaking of the head or occasional twitching of the legs, and if eating, drinking, playing and defecating are normal, this is generally not a major problem and does not affect the quality of life and can be controlled with medication. And if it does not develop seriously and there are no acute intracranial problems, it is less likely to affect life expectancy. However, if a grand mal seizure occurs and the whole body continues to twitch or twitches irregularly, the damage is serious and there is no quality of life. Furthermore, each convulsion is a dangerous period and can cause damage to the heart as well as the skull, and death can occur if there is a large intracranial haemorrhage or cardiac arrest.
