What causes hypersomnia?

I sleep all night, and take naps during the day, but I still feel sleepy most of the time. I think I might have hypersomnia, but I can't find much information about its causes on the internet. I don't work at night, and I don't think I have narcolepsy. What could be causing my hypersomnia?

Doctors Answers (1)

Richard L. Jacobson, D.M.D., M.S.
Answered on: 2/21/2014

This could be obstructive sleep apnea.