Impaired Sense of Smell

Impaired sense of smell may be caused by hay fever, allergy, sinus infection, common cold, nasal polyps, deviated septum, brain tumor and alzheimer's disease.  To learn more about the cause of your symptoms, click on each of the diseases listed below.

Allergy

Hay fever

Alzheimer's Disease

Parkinson's Disease

Common Cold

Sinus Infection

Brain Tumor

Nasal Polyps

Deviated Nasal Septum

Runny Nose

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