Has anyone had problems with their child sleeping? My child has ADHD and there are times when she either won't sleep at all even at night or sleep for over 12 hours at one time. I feel as if her brain is just giving out when she goes to bed at 5pm and doesnt wake up until the next morning. I am unsure if this is part of Autism or just the ADHD. I still have not had a doctor recognize my concern for her unusual sleeping habits. Granted there will be times when she is on a regular schedule but it only last for a few weeks then back to not sleeping, over sleeping, a constant cycle.