Seizures can definetly be associated with sleep disorders. I was diagnosed with epilepsy 5 years ago and underwent a "sleep-deprivation" EEG to see if lack of sleep caused my seizures. However, as it turned out, it was actually TOO much sleep that caused some of mine. I only have seizures when I sleep more than 10 hours. Taking him to the Neurologist is a good idea. Be sure to have all the previous test results forwarded. Good luck.