An hallucination is an apparent sensory perception of an external object when no such object is present. It is to be differentiated from an illusion, which is a real perception that is misinterpreted. • Fever (especially children and the elderly) ■ Cocaine ■ LSD ■ Ecstasy ■ Tricyclic antidepressant overdose • Alcohol • Delirium tremens (alcohol withdrawal) • Post-traumatic stress disorder • Mania • Sensory deprivation (e.g. blindness or deafness) • Hypoxia • Severe metabolic disturbances (e.g. diabetic ketoacidosis, hypothyroidism) • Dementia • Others
Hallucinations
Causes
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Hallucinations
