narcolepsy
"I took Nuvigil for a little over a year. It changed my life. I have had chronic fatigue for 13 years and the Nuvigil gave me the energy to live a normal life. I had a few side effects, but being awake was more important to me. Occasionally I would sleep lightly or stay up until 2 am. The more noticeable side effect was the fogginess. I would often forget what I was doing, why I walked into the other room and I couldn%u2019t get words out quick enough. I always had the %u201Cit%u2019s stuck at the tip of my tongue%u201D feeling when talking because I couldn%u2019t remember certain words. 
Overall, I was very satisfied with this medicine and it was effective. Once I lost my insurance I couldn%u2019t afford to take it anymore. $565 a month is a bit much."