depression
"I had depression and could not sleep longer than 2 hour. With Seroquel 200 mg I was ok  and slept 8 to 9 hours after 6 to 7 weeks. Side effects dizziness weakness, sweating, chills, cough loss of appetite. I got to dread taking it because of side effects.  I would wait and fall asleep naturally but only last for 2 to 3 hours wake up  take a short walk to feel tired again and then would take 100 mg and go to sleep still side effects not as bad but would get anxious upon awakening and needed to usually take lorazapam or equivalent. Going to see doc and hope he  can suggest  something different"