Three kinds of hallucinations:

1, functional hallucination. Refers to the illusion experience of the same sense when the real stimulus causes a certain perceptual body and face. Its clinical feature is that hallucinations (usually auditory hallucinations) and real stimuli appear at the same time, * * * coexist, * * * disappear together, and the two are not integrated.

2. Reflex hallucination. When one sense is stimulated by reality, another sense will have hallucinations. If the patient hears someone else or sneezes himself, he can see a person standing in front of him (hallucination), but in fact this person does not exist. This symptom is found in the premonitory period of schizophrenia, hysteria and epilepsy.

3. Psychogenic hallucinations. Refers to the illusion that appears in vivid imagination, memory or expectation during the intense emotional experience. For example, after the death of a loved one, patients can sometimes hear the voice of their loved ones or see their loved ones come back.