system
What causes halucinations with disturbed sleep?
human
Will do my best to properly explain that a friend has been having, and has been taking 5 mg for approx. 2 years.  He wakes up in the middle of the night and cannot return to normal sleep; instead, he has what he has described as random and incohesive thought patterns instead.  He cannot stop these thoughts but continues to concoct quite strange scenarios that have no connection, sometimes for 2 to 3 hours.  The problem "thinking" in the wee hours has left him quite exhausted the next day.  Now he's afraid to go to sleep.  Can Aricept cause such harmful issues?  Thank you.
gpt
Hello sir Presence of Hallucination indicates that the person has lost contact with reality or in other terms we can say that the person is psychotic. Hallucinations arises when one's thinking process is so disorganised that he or she can not even judge that what is real and what is his or her imagination. A psychotic person can not diffrenciate in imagination and reality. Thats why he responds to his imagination as if they were reality. When any person have hallucinations he can not sleep because he will be busy in responding the voices.Thank you