#ageusia

• Ageusic — A person suffering from ageusia, exhibiting a total loss or a congenital or acquired absence of the sense of taste. As an adjective, it describes the state of an organism or a sensory system lacking the ability to perceive and distinguish basic tastes (sweet, salty, sour, bitter, umami).
• Ageusia — A total loss of the sense of taste, caused by lesions of the lingual mucosa, the afferent nerve pathways (facial, glossopharyngeal nerve), or the gustatory centers in the cerebral cortex. It can be congenital, but it is most frequently an acquired symptom following trauma, respiratory infections, or drug treatments.
• Allotriogeusia — A qualitative taste perception disorder characterized by the perversion, distortion, or aberrant interpretation of tastes; a condition where the patient perceives unpleasant, bizarre, or completely different tastes (for instance, metallic, ashen, or spoiled tastes) in the presence of normal food stimuli. This structural neurological phenomenon can be caused by lesions of the gustatory pathways, viral infections, temporal lobe dysfunctions, or complex psychiatric disorders.