I have been seeing figures in recent days when I am fast asleep or just waking up, and I am worried about my mental problems, I wonder if this is a normal phenomenon? Answer: In response to the patient’s above doubts, I would like to say: Hallucination: refers to the perceptual experience that occurs when there is no real stimulus acting on the sensory organs, is a kind of unreal perception. Hallucinations are the most common psychotic symptom in clinical practice and are often combined with delusions. Hallucinations can be caused by organic brain damage, brain metabolism abnormalities, or can be seen in various functional psychiatric disorders. Pre-sleep hallucinations: hallucinatory experiences that occur during the transition phase between waking and sleeping. They include hearing one’s own name and seeing figures before falling asleep, after waking up from sleep, and during the day when sitting and napping in these seemingly sleepy states. Patients can fully recall the content of hallucinations after waking up. It can be seen in normal people, episodic sleep disorder, and schizophrenia. Through the above explanation, do you have a more comprehensive understanding of hallucinations and hallucinations before going to sleep?