| umls-concept:C0018524 | skos:definition | MSH: Subjectively experienced sensations in the absence of an appropriate stimulus, but which are regarded by the individual as real. They may be of organic origin or associated with MENTAL DISORDERS.,CSP: subjectively experienced sensations in the absence of an appropriate stimulus, but which are regarded by the individual as real; may be of organic origin, drug induced, or associated with a mental disorder.,NCI: A disorder characterized by a false sensory perception in the absence of an external stimulus.,CHV: a false sensory perception in the absence of an external stimulus,CHV: a false sensory perception in the absence of an external stimulus,CHV: a false sensory perception in the absence of an external stimulus,CHV: a false sensory perception in the absence of an external stimulus,CHV: a false sensory perception in the absence of an external stimulus,NCI: A sight, sound, smell, taste, or touch that a person believes to be real but is not real. Hallucinations can be caused by nervous system disease, certa | lld:umls |
