olfactory hallucination

Also found in: Dictionary, Thesaurus, Legal, Encyclopedia.


a sensory impression (sight, touch, sound, smell, or taste) that has no basis in external stimulation. Hallucinations can have psychologic causes, as in mental illness, or they can result from drugs, alcohol, organic illnesses, such as brain tumor or senility, or exhaustion. When hallucinations have a psychologic origin, they usually represent a disguised form of a repressed conflict. adj. adj hallu´cinative, hallu´cinatory.
auditory hallucination a hallucination of hearing; the most common type.
gustatory hallucination a hallucination of taste.
haptic hallucination tactile hallucination.
hypnagogic hallucination a vivid, dreamlike hallucination occurring at sleep onset.
hypnopompic hallucination a vivid, dreamlike hallucination occurring on awakening.
kinesthetic hallucination a hallucination involving the sense of bodily movement.
olfactory hallucination a hallucination of smell.
somatic hallucination a hallucination involving the perception of a physical experience occurring within the body.
tactile hallucination a hallucination of touch.
visual hallucination a hallucination of sight.

ol·fac·to·ry hal·lu·ci·na·tion

false perception in smell.

olfactory hallucination

Etymology: L, olfactus, sense of smell, alucinari, to wander mentally
a condition in which an individual has false perceptions of odors, which are usually repugnant or offensive. The hallucinations are sometimes associated with guilt feelings.

olfactory hallucination

Phantosmia The misperception of a nasty odor that is either
1. Extrinsic–ie, of non-self origin, which is mildly annoying but not a pervasive problem for the Pt or.
2. Intrinsic–ie, perceived to emanate from the Pt's own sweat, flatus or halitosis and which may prove disconcerting to the Pt. See Odors, Olfactory reference syndrome.
References in periodicals archive ?
In psychiatric disorders, olfactory hallucinations often include a delusional belief about the cause of the smell