Dysgeusia

Introduction Abnormalities of taste means that the taste of the mouth and tongue (subjective feeling) is different from normal people, such as bitter, light, sour, sweet, salty, etc., but also can be expressed as tasteless, taste loss or complete loss of taste. . A common oral disorder in the sense of taste, which is closely related to local and systemic factors.

Cause

Inflammation, nutritional deficiencies, drugs, surgery, and trauma can cause dysgeusia caused by diseases and dysfunctions of the tongue itself and afferent nerves.

1, burns

Generally, it is caused by the stimulation of the taste bud caused by the over-hot food, which causes the taste bud to distinguish the taste in a short period of time. This symptom can generally be relieved by itself without further treatment.

2, insufficient amount of saliva

The amount of normal saliva can keep the molecules of the taste substance in contact with the taste buds and protect the mucous membranes from the atrophy of the taste buds. When the amount of saliva is insufficient, the taste substances cannot reach the taste bud receptors, so the taste cannot be sensed normally. Common in patients with dry mouth and dry syndrome.

3. Lack of zinc and vitamin A

Zinc and vitamin A are important synthetic substances in the taste cells of taste receptors. The new deficiency causes the receptor proteins in the taste receptors to not be synthesized smoothly, and the lack of vitamin A can cause the taste cells to not be metabolized and synthesized, thus affecting the taste. Feeling.

4, iron deficiency

It can lead to atrophy of the taste buds, a decrease in the number of receptors, and a decrease in nerve excitation and information transmission, which eventually leads to an increase in the taste threshold.

5, Candida infection

Candida can invade the taste buds to block the taste hole, and the resulting taste-suppressing substances can also cause taste disturbance; in addition, most patients with Candida albicans infection will have reduced saliva, which indirectly affects the taste.

6, nerve damage

Middle ear surgery caused by tympanic nerve damage, facial nerve palsy, acoustic neuroma, and nerve damage caused by cerebral hemorrhage can cause the taste to pass to the path disorder, thus affecting the feeling of taste.

7, psychological disorders

Common in patients with pseudo-depression, trauma and rickets.

8, drugs

The taste sensation caused by the drug is caused by the presence of the drug and its decomposition products in saliva. Such as angiotensin-converting enzyme inhibitors and other antihypertensive drugs, anti-thyroid disease drugs, terbinafine, captopril, Itracon and so on. There are reports of people with dysgexia after the rejection of the horse.

9, smell and taste

The hand of taste and smell often combines in some sensory cells, thereby creating mutual influence.

10, aging

It has been reported that the sensitivity to taste is decreasing with age.

11, nutritional deficiencies and systemic diseases

Burning mouth syndrome, Parkinson's disease, diabetes, advanced tumors, etc.

12, radiation and Bell face

Radiation therapy can destroy taste buds and affect taste.

an examination

Related inspection

Facial nerve taste test saliva pH sublingual nerve examination

1. Taste threshold

Let the subject taste a series of scented concentrated liquids with increasing concentration and express the feeling. The lowest concentration at which the taste can be perceived is called the perception threshold of taste, and the lowest concentration at which the basic taste of the solution belongs to is The recognition threshold of taste.

2, saliva flow

In addition to the taste threshold, the flow rate and flow rate of saliva also have a considerable impact on taste. The measurement of saliva flow is divided into mixed total saliva collection and parotid saliva collection.

Differential diagnosis

diagnosis

Abnormal taste can be roughly divided into subjective and objective reasons. Subjective causes are mainly related to emotions, and objective reasons mainly affect the brain nerves related to taste, which leads to taste decline. In addition, to maintain a normal taste, it is also necessary to have good saliva quality, the components such as salivary enzymes are normal, and the microorganisms in the oral cavity are not pathologically grown. Conversely, taste may be a problem. If young and middle-aged people suddenly lose their sense of taste, they should be alert to cranial nerve problems and need to go to the hospital for diagnosis and treatment.

The material in this site is intended to be of general informational use and is not intended to constitute medical advice, probable diagnosis, or recommended treatments.