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Taste SensationAka: Taste Dysfunction, Taste Impairment, Loss of Taste, Ageusia, Dysgeusia, Hypogeusia

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  1. See Also
    1. Anosmia
    2. Metallic Taste
  2. Definitions
    1. Ageusia: Loss of taste sensation
    2. Hypogeusia: Diminished taste sensation
    3. Dysgeusia: Altered taste sensation
  3. Pathophysiology
    1. Innervation via parasympathetic fibers
      1. Anterior two thirds of Tongue: Lingual nerve
      2. Posterior one third of Tongue: Glossopharyngeal Nerve
    2. Loss of taste sensation is usually due to Anosmia
      1. Tongue differentiates only bitter, salt, sour, sweet
  4. Causes: Altered or loss of taste sensation
    1. Miscellaneous Causes
      1. Aging (difficulty detecting salty or bitter taste)
      2. Anxiety Disorder
      3. Cancer
      4. Renal Failure
      5. Hepatic failure
    2. Endocrine Disorders
      1. Cushing's Syndrome
      2. Hypothyroidism
      3. Diabetes Mellitus
    3. Vitamin Deficiency
      1. Vitamin B3 Deficiency
      2. Zinc Deficiency
    4. Local injury or inflammation
      1. Radiation therapy
      2. Glossitis
      3. Tobacco abuse
      4. Denture use
    5. Medications
      1. Antirheumatic Drugs (e.g. Penicillamine)
      2. Antiproliferative drugs (e.g. Cisplatin)
      3. Azelastine
      4. ACE Inhibitors
      5. Clarithromycin
      6. Zopiclone
    6. Neurologic conditions
      1. Bell's Palsy
      2. Familial Dysautonomia
      3. Multiple Sclerosis
  5. References
    1. Baloh in Goldman (2000) Cecil Medicine, p. 2249-50
    2. Mirowski in Feldman (2002) Sleisenger GI, p. 339-40

Ageusia (C0001800)

Definition (MSH)Complete or severe loss of the subjective sense of taste, frequently accompanied by OLFACTION DISORDERS.
ConceptsSign or Symptom (T184)
EnglishAbsence of sense of taste, Ageusia, Ageustia, Gustatory anaesthesia, Gustatory anesthesia, Loss of taste, Loss of taste sense, TASTE ABSENT, TASTE LOSS, Taste loss symptom
Spanishageusia, ageustia, anestesia gustativa, ausencia del sentido del gusto, pérdida del gusto, perdida del gusto
CreditsDerived from the NIH UMLS (Unified Medical Language System)


Dysgeusia (C0013378)

Definition (MSH)A condition characterized by alterations of the sense of taste which may range from mild to severe, including gross distortions of taste quality.
Definition (NCI)A bad taste in the mouth.
Definition (NCI)Abnormal appreciation of the taste of foodstuffs, can be related to decreased sense of smell.
ConceptsFinding (T033)
ICD9781.1
EnglishAdverse taste perception, Disordered taste, Distorted taste, DYSGENSIA, Dysgeusia, Dysgeusias, Gustatory alteration, Parageusia, Parageusias, Perversion of sense of taste, TASTE ALTERATION, TASTE IMPAIRMENT, TASTE PERVERSION, TASTE PERVERSION OF, Taste sense altered, Things taste abnormal, Things taste different, Things taste peculiar
Spanishalteración del sentido del gusto, alteracion del sentido del gusto, disgeusia, gusto alterado, gusto anormal, parageusia, perversión del sentido del gusto, perversion del sentido del gusto
CreditsDerived from the NIH UMLS (Unified Medical Language System)


Hypogeusia (C0151934)

ConceptsFinding (T033)
EnglishGUSTATORY SENSE DIMINISHED, HYPOGENSIA, HYPOGEUSESTHESIA, Hypogeusia, Hypogeusias
CreditsDerived from the NIH UMLS (Unified Medical Language System)



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