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In contrast, a permanent loss of smell may be caused by death of olfactory receptor neurons in the nose or by brain injury in which there is damage to the olfactory nerve or damage to brain areas that process smell (see olfactory system). The lack of the sense of smell at birth, usually due to genetic factors, is referred to as congenital anosmia.
This disease can have profound effects on everyday life. Symptoms that usually accompany ABS include elevated blood alcohol levels as well as symptoms consistent with alcohol intoxication—such as slurred speech, stumbling, loss of motor functions, dizziness, and belching. [8] Mood changes and other neurological problems have also been ...
Instead, the diagnosis is made through a combination of clinical evaluations, smell tests, imaging studies, and the exclusion of other potential causes of smell loss. [ 1 ] [ 12 ] This comprehensive approach ensures that other conditions that might interfere with the sense of smell are ruled out before confirming a diagnosis of congenital anosmia.
Alcohol-related brain damage can have drastic effects on the individuals affected and their loved ones. The options for treatment are very limited compared to other disorders. Although limited, most patients with alcohol-related cognitive deficits experienced slight improvement of their symptoms over the first two to three months of treatment. [8]
Dysosmia is a disorder described as any qualitative alteration or distortion of the perception of smell. [1] Qualitative alterations differ from quantitative alterations, which include anosmia and hyposmia. [2] Dysosmia can be classified as either parosmia (also called troposmia) or phantosmia. Parosmia is a distortion in the perception of an ...
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Losing or not having your sense of smell may be linked to changes in breathing that could lead to depression, social isolation or other mental health problems, a new study suggests.
A related condition is anosmia, in which no odors can be detected. Some of the causes of olfaction problems are allergies, nasal polyps , viral infections and head trauma. In 2012 an estimated 9.8 million people aged 40 and older in the United States had hyposmia and an additional 3.4 million had anosmia /severe hyposmia.