My 15-year-old son can not sleep properly ...

My son is 15 years old and can not sleep properly. He says that he is sleepy only when he lies down in bed the sleep goes away, and when he can sleep it is almost time to wake up to go to school he has to wake up at 6:00 in the morning. What can be dr.?
Expert answer:

This is a symptom called insomnia and is usually associated with emotional problems (depression or anxiety, among other causes) the ideal is to take your child to the doctor for correct diagnosis and treatment.