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34 Possible Causes for Impaired Olfaction

  • Alzheimer Disease

    Roberts, Neuroimaging biomarkers and impaired olfaction in cognitively normal individuals, Annals of Neurology, 81, 6, (871-882), (2017). Babette L.R. Reijs, Inez H.G.B.[dx.doi.org] Duda, Odor Perception and Neuropathology in Neurodegenerative Diseases and Schizophrenia, Handbook of Olfaction and Gustation, (403-452), (2015).[dx.doi.org] Martin Vyhnalek, Hana Magerova, Ross Andel, Tomas Nikolai, Alexandra Kadlecova, Jan Laczo and Jakub Hort, Olfactory identification in amnestic and non-amnestic mild cognitive impairment[dx.doi.org]

  • Migraine

    Royet, Olfaction et pathologies neurologiques : revue de la littérature, Revue Neurologique, 10.1016/S0035-3787(07)90387-2, 163, 2, (155-167), (2007). G.G.[doi.org] Goadsby, Migraine as a Cerebral Ionopathy with Impaired Central Sensory Processing, Molecular Neurology, 10.1016/B978-012369509-3.50030-5, (439-461), (2007). G.[doi.org]

  • Parkinson's Disease

    olfaction but less severe than Parkinson’s disease 8 MRI shows nigrostriatal degeneration with gliosis in the lateral putamen with hyperintense proton density bands and hypointense[aafp.org] Impaired olfaction and other prodromal features in the Parkinson At-Risk Syndrome Study.[ncbi.nlm.nih.gov] Further reading Partial depletion of dopaminergic neurons in the substantia nigra impairs olfaction and alters neural activity in the olfactory bulb Wenfeng Zhang, Changcheng[dx.doi.org]

  • Zinc Deficiency

    olfaction in ulcerative colitis.[doi.org] Susuki H, Takeda T & Furukawa Y (2000): Investigation of associations between food intake, plasma zinc and sense of smell and taste in inflammatory bowel disease: evidence of impaired[doi.org]

  • Migraine with or without Aura

    Royet, Olfaction et pathologies neurologiques : revue de la littérature, Revue Neurologique, 10.1016/S0035-3787(07)90387-2, 163, 2, (155-167), (2007). G.G.[doi.org] Goadsby, Migraine as a Cerebral Ionopathy with Impaired Central Sensory Processing, Molecular Neurology, 10.1016/B978-012369509-3.50030-5, (439-461), (2007). G.[doi.org]

  • Anosmia

    RESULTS: Threshold and identification testing revealed impaired olfaction in all patients.[ncbi.nlm.nih.gov] The prevalence of impaired olfaction increases with age.[ncbi.nlm.nih.gov] Olfactory groove meningioma can present with slowly worsening impaired olfaction.[ncbi.nlm.nih.gov]

  • Nasal Fracture

    Even a mild head trauma can lead to a temporarily impaired olfaction [243].[doi.org] Even a mild head trauma can lead to a temporarily impaired olfaction [243] .[doi.org]

  • Atrophic Rhinitis

    Clinical, endoscopic, radiological features: The clinical symptoms include nasal obstruction, epistaxis, impaired olfaction, purulence and crusting.[scitechnol.com]

  • Nasal Polyp

    Olfaction and nasal obstruction are the most important considerations in terms of symptoms.[emedicine.com] Nasal polyposis can impair a person's quality of life more than perennial allergic rhinitis.[emedicine.com]

  • Mild Cognitive Impairment

    Bohr, DNA polymerase β decrement triggers death of olfactory bulb cells and impairs olfaction in a mouse model of Alzheimer's disease, Aging Cell, 16, 1, (162-172), (2016)[doi.org]

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