Leroy1 described a special variety of visual hallucinations which he called lilliputian. They consist of a vision of small people, occasionally accompanied by animals or by other objects of minute size. These phenomena have nothing to do with micropsy. The hallucinations are usually multiple, mobile and of bright color. The patient sometimes hears the small people speaking with a "lilliputian" voice. The hallucinations are usually associated with a pleasant state of mind, rarely having an unpleasant or terrifying effect on the patient. Lilliputian hallucinations have occurred in the most varied conditions: arteriosclerosis, senile psychosis, alcoholic psychosis and most of the toxic and toxi-infectious states (typhoid, cholera, erysipelas, pneumonia, purulent pluerisy, etc.). They are observed occasionally in dreams and in the hypnagogic state. Various drugs—ether, cocaine, alcohol, hashish, hyoscine,2 caffeine citrate3—can produce lilliputian hallucinations. Few cases of lilliputian hallucinations have been reported in the literature on schizophrenia.
ANGYAL A. PHENOMENA RESEMBLING LILLIPUTIAN HALLUCINATIONS IN SCHIZOPHRENIA. Arch NeurPsych. 1936;36(1):34–41. doi:https://doi.org/10.1001/archneurpsyc.1936.02260070042004
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