I don't have trouble falling asleep, but I fall asleep even without the drowsy stage at times. My eyelids just seem to get suddenly heavy and close. Then I fall asleep soon after.

This never happened to me before the injury. It can be frustrating because I can be in the middle of a good movie, or in the company of others, and I just fall asleep, with little to no forewarning. I can sleep as briefly as 5 minutes, or as long as 45 minutes. And it doesn't seem related to specific activities, just a sudden, all out timeout.

I feel somewhat like a narcoleptic I guess. Has anyone else experienced this?

Take care, M-i-m