Dysgeusia

Under abnormal taste or gustatory ( Dysgeusien ) are understood in medicine dysgeusia ( Gustatorik ). They can be caused by various diseases, but also by drugs.

Classification

There are qualitative distinction of quantitative disorders. The quantitative disturbances either hypersensitivity ( Hypergeusie ) or a decreased sensitivity ( hypogeusia ) the perception of taste is present. The failure of the sense of taste is called ageusia. For qualitative disturbances either taste perception is altered, so-called parageusia, or taste sensations are perceived, without the need for an adequate taste stimulus were present. The latter is also referred to as Phantogeusie.

Basics

Taste qualities are only sweet, sour, salty, bitter and umami (see also Gustatory perception). They can check with sugar solution, citric acid, brine, quinine and glutamic acid. The " coloring" of taste via the nose. A failure of the olfactory sensory neurons ( anosmia ) therefore affects the sense of taste also.

The taste buds of the anterior two thirds of the tongue originate from the chorda tympani, a branch of the facial nerve ( VII cranial nerve). They run along with the lingual nerve, a branch of the mandibular nerve of the trigeminal nerve ( fifth cranial nerve). The posterior third of the tongue is innervated by the glossopharyngeal nerve ( cranial nerve IX ). ( For motor and sensory innervation see tongue).

Causes

For a taste disturbance may be caused by injury or functional impairment

• The taste buds,
• The peripheral nerves, which conduct the taste stimuli from the taste buds in the central nervous system, or
• The gustatory pathway ( Schmeckbahn ) with development in the brain.

Others

In the movie a beef caused an angry innkeeper at Louis de Funes, who plays an influential restaurant critic, complete loss of taste ( ageusia ), by forcing him to eat tons of kitchen waste.

Swell

• Disease symptom in neurology
• Symptom of disease in the ear, nose and throat medicine
• Taste