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Phantosmia (phantom smell), also called an olfactory hallucination or a phantom odor, [1] is smelling an odor that is not actually there. This hallucination is intrinsically suspicious as the formal evaluation and detection of relatively low levels of odour particles is itself a very tricky task in air epistemology.
In some cases, there has been reported psychiatric and medical conditions in first degree relatives such as schizophrenia, [1] psychosis, [2] alcoholism, [1] suicide, [1] affective disorders, [1] obsessive compulsive disorder, [1] anxiety, [2] paranoia, [1] neurosis, [2] sociopathy, [2] and epilepsy. [1] Sometimes more than one family member ...
Hyperosmia is an increased olfactory acuity (heightened sense of smell), usually caused by a lower threshold for odor. [1] This perceptual disorder arises when there is an abnormally increased signal at any point between the olfactory receptors and the olfactory cortex.
Psychoactive substance-induced psychotic disorders outlined within the ICD-10 codes F10.5—F19.5: F10.5 alcohol: [8] [9] [10] Alcohol is a common cause of psychotic disorders or episodes, which may occur through acute intoxication, chronic alcoholism, withdrawal, exacerbation of existing disorders, or acute idiosyncratic reactions. [8]
Chronic hallucinatory psychosis is a psychosis subtype, classified under "Other nonorganic psychosis" by the ICD-10 Chapter V: Mental and behavioural disorders. Other abnormal mental symptoms in the early stages are, as a rule, absent. The patient is most usually quiet and orderly, with a good memory.
A decreased or distorted sense of smell therefore results in a decreased quality of life. [5] Distortions are believed to have a greater negative impact on people than the complete loss of smell because they are constantly reminded of the disorder and the distortions have a greater effect on eating habits. [1] [5]
The DSM-IV-TR is a text revision of the DSM-IV. [1] While no new disorders were added in this version, 11 subtypes were added and 8 were removed. This list features both the added and removed subtypes. Also, 22 ICD-9-CM codes were updated. [2] The ICD codes stated in the first column are those from the DSM-IV-TR.
Basic symptoms are more specific to identifying people who exhibit signs of prodromal psychosis and are more likely to develop schizophrenia over other disorders related to psychosis. [1] Schizophrenia is a psychotic disorder, but is not synonymous with psychosis. [1] In the prodrome to psychosis, uncharacteristic basic symptoms develop first ...