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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.
Hyposmia, or microsmia, [1] is a reduced ability to smell and to detect odors.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.
Presbyosmia is the gradual degeneration of sense of smell due to ageing process, which occurs especially in those who are 70 years old or more. It is possibly due to loss of nerve endings in the nose, as well as reduced mucus production. Presbyosmia is less prevalent among elderly who are healthy, and who lack the risk factors for smell ...
Doctors from around the world are reporting cases of COVID-19 patients who have lost their sense of smell, known as anosmia, or taste, known as ageusia. The director of the University of Florida ...
A new analysis of breathing data from 52 volunteers over a 24-hour period revealed that people with a normal sense of smell had little spikes, or “sniffs,” during each breath that were not ...
Sense of smell is a warning sign for dementia but more research is needed. Can Covid-related loss of smell lead to cognitive decline or increase your risk for Alzheimer's? Sense of smell is a ...
Anosmia is the inability to perceive odor, or in other words a lack of functioning olfaction.Many patients may experience unilateral or bilateral anosmia. A temporary loss of smell can be caused by a blocked nose or infection. 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
A loss of smell may be linked to an increased risk of heart failure, research finds. Here, experts explain the link between sense of smell and heart disease.