My mom seems to hallucinate during the day when she is bored and takes cat naps. It's when she wakes up from the cat naps that she thinks she's seeing people or things moving, like her door knob on her bedroom door.
It is disturbing when she hallucinates because she believes what she saw is real and trying to tell her otherwise is a futile effort.
I did a search again, "what causes hallucinations" and I found a condition called Hypnagogic Hallucinations. The article that I read describes my mom's hallucinations. http://neurology.health-cares.net/hypnagogic-hallucination.php
Hypnagogic Hallucinations come on at sleep onset and just as one is waking. The episodes can be frightening as the article states. I've seen my mom get really scared.
One thing that I do notice, the hallucinations are fewer and fewer now that she's off gluten.
Other than the occassional hallucinations, my mom is doing fabulous. Her fasting blood sugar is now in the 80's every morning and her blood pressure is starting to come down. She's exercising every day on the treadmill, sweeping the patio and front walkway, doing laundry and vacuuming her bedroom. All of these tasks she wasn't able to do on her own just a few weeks ago.
Once we cut out gluten from her diet, my mom became more sane and is able to communicate with everyone around her.