Olfactory dysfunction in neurodegenerative disorders Emerging evidence indicates that olfactory deficits—such as impaired odor detection and discrimination—manifest early in these diseases, preceding cognitive and motor symptoms by several years (Ross et al., 2008; Doty, 2017).
Sensorineural defects involve the more central neural structures. Overall, the most common causes of primary olfactory deficits are aging, nasal and/or sinus disease, prior viral upper respiratory tract infections (URTIs), and head trauma.
Disorders of Olfaction DisordersSymptom Hyperosmia Abnormally heightened sense of smell Hyposmia Decreased ability to smell Olfactory reference syndrome (Autodysomophobia) Psychiatric condition whereby the patient is overly preoccupied by the concern of body odor (insisting that it is foul or unpleasant in most cases)4 more rows
Olfactory dysfunction in neurodegenerative disorders Emerging evidence indicates that olfactory deficits—such as impaired odor detection and discrimination—manifest early in these diseases, preceding cognitive and motor symptoms by several years (Ross et al., 2008; Doty, 2017).
A smell disorder can be an early sign of Parkinson's disease, Alzheimer's disease, or multiple sclerosis. It can also be related to other medical conditions, such as obesity, diabetes, hypertension, and malnutrition. If you are experiencing a smell disorder, talk with your doctor.
Degenerative disease is the result of a continuous process based on degenerative cell changes, affecting tissues or organs, which will increasingly deteriorate over time. In neurodegenerative diseases, cells of the central nervous system stop working or die via neurodegeneration.
Neurodegeneration is the degradation of the structure and function and ultimately loss of neurons by death. It leads to diseases that affect movement, memory and cognition.
(NOOR-oh-dee-JEH-neh-ruh-tiv dis-OR-der) A type of disease in which cells of the central nervous system stop working or die. Neurodegenerative disorders usually get worse over time and have no cure. They may be genetic or be caused by a tumor or stroke.
Conditions Alzheimer's disease and other memory disorders. Ataxia. Huntington's disease. Parkinson's disease. Motor neuron disease. Multiple system atrophy. Progressive supranuclear palsy.
(NOOR-oh-dee-JEH-neh-ruh-tiv dis-OR-der) A type of disease in which cells of the central nervous system stop working or die. Neurodegenerative disorders usually get worse over time and have no cure.