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Decreased olfactory sensitivity.



reduction of the sense of smell. Hyposmia may be effective for all odors or for just some, and it may be two-sided or one-sided. Hyposmia occurs with the impairment of nasal breathing, acute or chronic inflammations of the mucous membranes of the nasal cavity (due to the common cold), diseases of the peripheral part of the olfactory nerve, and afflictions of the olfactory center. Diagnosis is made by means of elementary odor tests or an olfactometer, a device that measures the keenness of the sense of smell. Therapy is ordinarily directed to elimination of the factor that has caused the hyposmia.


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Bohnen NI, Gedela S, Herath P Constantine GM, Moore RY Selective hyposmia in Parkinson disease: association with hippocampal dopamine activity.
Caption: Hyposmia, or poor sense of smell, can signal Parkinson's disease years before diagnosis.
This is considered rather severe hyposmia and, interestingly, only about a third of these folks noticed that they even had this symptom.
Major Finding: Significantly more individuals with hyposmia had DAT levels of 65% or lower, compared with normosmic individuals (11% vs.
While analysing 314 patients in the study, 71% of patients did not have any olfactory disturbance and 29% of patients were having olfactory disturbance, of which 4% of patients were having Anosmia and 25% of patients were having Hyposmia (Table 14).
The prevalence of hyposmia or anosmia in PD has been reported to range from 70% to 90% [17].
The minor signs and symptoms are hyposmia, fever, halitosis, headache, dental pain, cough, and otalgia.
Seven (10%) were having vague complaints especially irritation, pain or hyposmia.
PD patients also suffer from a wide range of non-motor symptoms--including hyposmia (poor sense of smell), gastroi ntestinal dysfunction, psychiatric features (e.
In addition to concerns regarding the efficacy of intranasal zinc therapy, increasing evidence indicates that this medication may be linked to severe, potentially permanent hyposmia (reduced sense of smell) and anosmia (loss of smell)," the authors said.
Chronic rhinosinusitis (CRS) is defined as 12 weeks or more of two or more of the following symptoms: mucopurulent nasal drainage; nasal obstruction; facial pain, pressure, or fullness; hyposmia and inflammation; nasal or middle meatus polyps; and/or imaging that shows sinus inflammation.
Kallmann syndrome is a genetic condition where the primary symptom is a failure to attain puberty and associated with additional symptoms of hypogonadism, hyposmia or Anosmia and almost invariably infertility.