Dysosmia
Distortion of the perception of smell / From Wikipedia, the free encyclopedia
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Dysosmia is a disorder described as any qualitative alteration or distortion of the perception of smell.[1] Qualitative alterations differ from quantitative alterations, which include anosmia and hyposmia.[2] Dysosmia can be classified as either parosmia (also called troposmia) or phantosmia. Parosmia is a distortion in the perception of an odorant. Odorants smell different from what one remembers. Phantosmia is the perception of an odor when no odorant is present. The cause of dysosmia still remains a theory. It is typically considered a neurological disorder and clinical associations with the disorder have been made.[3] Most cases are described as idiopathic and the main antecedents related to parosmia are URTIs, head trauma, and nasal and paranasal sinus disease.[4] Dysosmia tends to go away on its own but there are options for treatment for patients that want immediate relief.[1]