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

Verbosity

Perception/
sensation
disorder

Audition

Tactile perception

Visual perception

Hallucination: Auditory hallucination

Index of psychology and psychiatry

Description	Mental processes

Disorders	Mental and behavioral ADHD OCD Tourette's Mood Developmental pervasive dyslexia and specific Substance-related alcohol Emotional and behavioral Symptoms and signs eponymous Evaluation and testing

Treatment	Psychotherapy CBT Drugs depression antipsychotics anxiety dementia hypnotics and sedatives psychostimulants, ADHD and nootropics

Index of smell

Description	Anatomy Receptors

Disease	Symptoms and signs

Treatment	–

Index of taste

Description	Anatomy Physiology

Disease	Symptoms and signs

Treatment	–