Hypogeusia

Hypogeusia is a reduced ability to taste things (to taste sweet, sour, bitter, or salty substances). The complete lack of taste is referred to as ageusia. Causes of hypogeusia include the chemotherapy drug bleomycin, an antitumor antibiotic as well as zinc deficiency.

Symptoms and signs: cognition, perception, emotional state and behaviour (R40–R46, 780.0–780.5, 781.1)

Cognition

Alteration of consciousness	Confusion (Delirium) Somnolence Obtundation Stupor Unconsciousness Syncope Coma Persistent vegetative state

Fainting/Syncope	Carotid sinus syncope Heat syncope Vasovagal episode

Other	Amnesia Anterograde amnesia Retrograde amnesia Dizziness Vertigo Presyncope/Lightheadedness Disequilibrium Convulsion

Emotional state

Behavior

Perception/
sensation
disorder

Audition

Tactile perception

Visual perception

Hallucination: Auditory hallucination

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