Loss of Taste Sensation
Loss of Taste Sensation Symptoms & Signs
Medical Author: Melissa Conrad Stöppler, MD
The sensations of taste and smell are related, so many disorders of the sense of taste are associated with a decreased sense of smell. These taste disorders can range from obstructions in or damage to the nose to damage to the brain and nervous system in general. The most common pure taste disorder is a phantom taste sensation; this is the perception of a "bad taste in the mouth" that does not go away. The decreased ability to taste certain types of foods is known medically as hypogeusia; the absence of taste entirely is termed ageusia. Dysgeusia refers to the presence of a metallic, rancid, or foul taste in the mouth. Taking certain medications can also interfere with the ability to taste. Some loss of taste sensation also occurs during the normal aging process, so elderly people may complain of decreased ability to taste foods. Sometimes, having a cold or upper respiratory infection can result in a decrease in taste sensation.
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Longo, D.L., et al. Harrison's Principles of Internal Medicine, 18th ed. United States: McGraw-Hill Professional, 2011.
United States. National Institute on Deafness and Other Communication Disorders. National Institutes of Health. "Taste Disorders." July 2009. <http://www.nidcd.nih.gov/health/smelltaste/taste.asp>.
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Other Causes of Loss of Taste Sensation
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- Congenital (Inborn) Disorders
- Nasal Polyps
- Poor Oral Hygiene
- Radiation Therapy to the Head/Neck
- Surgical Procedures in the Head/Neck Area
- Tooth Decay
- Trauma to the Head
- Vitamin B12 Deficiency
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