Parkinson’s Disease Overview

Dysfunction In Sense Of Smell

Dysfunction in sense of smell commonly occurs with Parkinson's disease, though researchers aren't sure why. Patients may begin losing their sense of smell long before they develop other Parkinson's disease symptoms. In fact, some studies indicate smell loss can be used to indicate individuals at a higher risk for developing Parkinson's disease. One theory for why Parkinson's disease may cause smell loss is the degenerative process might start in both the gut and olfactory bulb. The olfactory bulb is the portion of the brain responsible for controlling the individual's ability to smell things. Since smell loss tends to occur slowly over time, many -patients may not notice they have scent-related dysfunction until they're tested.

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