In fact if you’ve ever been sleep deprived including being able to sleep in shorter bursts but unable to get several REM cycles or you use substances to cause sedation rather than sleep you’ve likely experienced mild hallucinations already

They’re called disturbances. The things like thinking you heard someone call your name, feeling crawling sensation on your skin briefly, seeing things move in your peripheral but nothings there when you look.

This is (one of the reasons) why I really hate the “I’m [anxious/ADHD/depressed/etc.] not crazy!” The divide you draw between yourself and people with psychosis and psychotic symptoms only serves to harm. Not only those you alienate but also yourself. Because you have no guarantee that you will not join us one day.