If you are waking up a lot or finding yourself very sleepy during the day, this could be what is going on. The Dr.. said I
have central
sleep apnea, and
have probably had this most of my life, a simple sleep study found this, and now I use a bi-pap machine, I now sleep very well (although it took awhile to get used to), and have not had those paranoia experiences since. This was several years ago, and if not for other medical problems that came on later, I would say that I was cured.