What are the different types of hallucinations according to the text?

Hallucinations can be visual, auditory, olfactory, gustatory, tactile, kinesthetic, and somatic.
Visual hallucinations can be simple or complex, geometric or kaleidoscopic, and can be integrated with vivid and bright colors or be colorless.
Olfactory hallucinations are frequent and can be attributed to external sources or the patient's own body.
Gustatory hallucinations are rare and can be attributed to various disorders, including schizophrenia, depression, and chronic alcoholism.
Tactile hallucinations can be active or passive and can be related to various disorders, including delirium tremens, toxic delirium, and schizophrenia.
Somatic hallucinations refer to peculiar sensations that the patient considers to be almost always coming from within their own body or affecting their internal and external organs.