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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.
Dysgeusia, also known as parageusia, is a distortion of the sense of taste. Dysgeusia is also often associated with ageusia, which is the complete lack of taste, and hypogeusia, which is a decrease in taste sensitivity. [1] An alteration in taste or smell may be a secondary process in various disease states, or it may be the primary symptom.
The remaining cases are believed to be due to disorders in the nose, sinuses, throat, lungs, esophagus, or stomach. [3] Rarely, bad breath can be due to an underlying medical condition such as liver failure or ketoacidosis. [2] Non-genuine cases occur when someone complains of having bad breath but other people cannot detect it. [2]
Diagnosing dysosmia precisely can be difficult due to the variety of causes and symptoms. Often, patients may be unsure whether or not they are having issues with smell or taste specifically. It is important to identify whether the distortion applies to an inhaled odorant or if an odor exists without the stimulus.
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.
As far as medical advice, Denneny said, "People who have altered smell are at particular risk for not being able to recognize the odor of smoke from fire, gas leaks, toxic chemicals, spoiled food ...
The cause of congenital anosmia is not fully understood, but it is often linked to the underdevelopment or absence of the olfactory bulbs and tracts. [9] Diagnosis typically involves clinical evaluation, smell tests, and imaging studies to identify any structural abnormalities in the olfactory system. [10]
Doctors remain unsure why Nat Manhertz’s strep throat developed into sepsis but believe it is possible that she had a cut in her throat that allowed the bacteria to enter the blood stream. Much ...