The researchers seem to agree that actual skull size makes no difference, because the cause is a mismatch between bone growth and brain growth – the skull stops growing but the brain doesn’t get the message and carries on growing. So it doesn’t matter if the skull grows big before it stops, the brain still doesn’t get the stop message. Something similar happens with many cancers: the gene responsible for cell growth mutates/changes so that it becomes deaf to orders to stop its activity, and just goes on producing cells.
SM and the Weather
In some dogs weather changes such as storms or a cold front seem to bring on pain episodes (some neurologists believe this may be due to shifts in atmospheric pressure which affect the CSF fluid pressure). When in pain, some dogs do seclude themselves under tables, chairs or beds. Some seem to have episodes mostly at night. Pain can occasionally make the dog irritable with other dogs or with people.