is it at all possible to hit your head so hard and cause damage that could lead to Narcolepsy?  I was injured in March and I can not wake up ever... i will just be sitting and fall to sleep   it takes forever to get myself out of bed.... i forget everything   so many things going on.... i was never like this before
Howell come to ChatDoctorThank for asking Your query being appreciated, Narcolepsy have several reasons, but exact reason cause is unknown what ever the reasons are there head injury is not among them, of you have narcolepsy then it may not be due to head injury, and it may be due to some other cause, what ever the symptoms you have even is not suggestive of narcolepsy, but it seems to be dementia, or a functional disorders I would suggest seeing the neuro-physician hope this information helps.