I'm tired all the time and fall asleep constantly. I've had 3 wrecks in the last year due to me falling asleep. I took a sleep apnea test and it was fine. Doctor took blood work and everything was normal. I have an appointment for a neurologist in a month but I'm not hopeful for an answer since I've been dealing with this since I was in 10th grade in 2005. I do have some memory issuse and have headaches ocasionally. Once in 2005 I did have a headache that was so painful it felt like the pressure from my pillow was unbearable and I went to the doctor who diagnosed it as a tension headache and gave me pills that made me a vegtable so I didn't take them anymore. My current doctor has put me on Nuvigil and it worked GREAT the first month I took it. Now it helps to take it but I'm still falling asleep even while I'm driving while I take it....HELP I'm terrified to drive but I have to to work and I feel like I'm sleeping my life away and I need an answer....