hypersomnia
"I have EDS also Epilepsy. Actually thought for years the EDS symptoms were caused by my antiseizure meds since they can make you tired. It was something that I just accepted so I really didn't have much of a life. 
Anyways, I started on Modafinil about 2 weeks ago. 100mg when I wake up at 7:45am to go to work. I was finding that it helped, but at about 11-11:30am, I was back to how I normally am. I just saw my dr and I am now to take 100mg three times a day. Today was my first day on my new dose. 1st dose was at 8am, 2nd at noon. Had 2 cups of coffee. By 4pm, I was feeling drowsy, yawning, eyes heavy. Feeling like I needed to nap. 

*Long story short: it works, but short-acting. 3-4 hours. I wish they made an Extended Release version.*"