If you feel tired the treatment is almost always symptomatic: stimulants and wakefulness promoters.
If you sleep over 11 hrs per 24 hours: that’s pathological and they will be prescribed.
Fall asleep faster than X minutes? Same diagnosis, same meds.
Have apnea and yet still fatigued/sleepy after CPAP/surgery? Same meds.
Fulfill criteria for ADHD? Same meds.
Fatigue after TBI? Same meds.
Fatigue with MS? Same meds.
The root cause may or may not be eventually found, but there is no reason to get diagnosed with whatever is most useful to begin at least supporting treatment.
If you sleep over 11 hrs per 24 hours: that’s pathological and they will be prescribed.
Fall asleep faster than X minutes? Same diagnosis, same meds.
Have apnea and yet still fatigued/sleepy after CPAP/surgery? Same meds.
Fulfill criteria for ADHD? Same meds.
Fatigue after TBI? Same meds.
Fatigue with MS? Same meds.
The root cause may or may not be eventually found, but there is no reason to get diagnosed with whatever is most useful to begin at least supporting treatment.