nervous system, such as that stemming from radiation therapy, glossitis, tobacco use, or the wearing of dentures, can also cause ageusia. Other known causes include loss of taste sensitivity from aging (causing a difficulty detecting salty or bitter taste), anxiety disorder, cancer, kidney failure and liver failure. Diagnosis Aguesia is diagnosed by an otolaryngologist, who can evaluate a patient's loss of taste among other things. To do this, a specialist will look into any other factors that could be causing ageusia, such as examining the head, nose, ears, and mouth. An otolaryngologist can also conduct a series of tests to assess the severity of ageusia, which includes identifying specific tastes that the patient can sense or recognize. References External links MedTerms Online Medical Dictionary. "Ageusia". Retrieved April 15, 2005. Family Practice Notebook. "Taste Sensation". Retrieved April 15, 2005. Massachusetts Eye and Ear Infirmary. "Taste Disorders". Retrieved May 26, 2010. Gustatory system Laryngology Symptoms and signs of mental disorders ru:Агевзия