Ageusia: Causes, Types, Treatment

Ageusia: Description Ageusia is the term used by physicians to describe a failure of taste perception. This extremely rare form of taste disorder (dysgeusia) can be divided into three subtypes: Complete ageusia: This is understood to be the complete loss of the ability to taste, i.e. those affected can no longer taste anything at all. … Ageusia: Causes, Types, Treatment