Also Known As: Ageusia, loss of taste

Ageusia (/əˈɡjuːziə/ ə-gew-zee-ə) is the loss of taste functions of the tongue, particularly the inability to detect sweetness, sourness, bitterness, saltiness, and umami (meaning "pleasant/savory taste"). It is sometimes confused with anosmia - a loss of the sense of smell. Because the tongue can only indicate texture and differentiate between sweet, sour, bitter, salty, and umami, most of what is perceived as the sense of taste is actually derived from smell. True ageusia is relatively rare compared to hypogeusia — a partial loss of taste — and dysgeusia — a distortion or alteration of taste.

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