Our daughter, who is now 22 years old, has a very troubling sleep problem. She sleeps so deeply that she is virtually impossible to wake up. We can shout in her ear, slap her face, punch her arm, splash water on her, and she shows no reaction to these stimuli at all. We can continue this for 15 to 30 minutes before she shows any reaction. We have more than once considered calling the emergency squad because she was so unresponsive. This is an everyday occurrence. She has had this condition since probably her mid teens. Drugs and alcohol are definitely not involved. I should mention that she has trouble falling asleep at night, usually it is 3 AM before she is able to sleep. We don't try to wake her until 10 or 11 AM. We haven't found a doctor yet who takes this seriously when we ask about it. They just brush it off saying it's not unusual for young people to have trouble waking up. But this is way beyond the usual teenage "groan and roll over" problem. She literally seems to be in a coma every morning I can find nothing on the internet that discusses these severe symptoms. Has anyone had any experience with this disorder?