I believe it's related to change in weather. Literally nothing can wake me. Missed work and chiropractor massage today. Finally became coherent after non stop sleeping 16 hours but still exhausted, vertigo, crying, trouble speaking and expressing thoughts. I take calcium channel blockers daily but weather changes have caused this to happen 6 times this month. I'm at a loss. Is it the fibro fog, the vestibular migraines, the stress, depression? Usually can't sleep when you have fibro but I've been having what I call comatose episodes weekly.