Cases reported "Dysgeusia"

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1/4. dysgeusia due to an orthodontic wire: a case report.

    A 14-year-old female developed gustatory disorder due to an orthodontic wire having pierced the right trigonal retromolar. The patient's complaints included traction pain on the right lower jaw, numbness on the right front half of the tongue and hypogeusia with the exception of sweet tastes. Possible causes of dysgeusia in this case were: (i) direct mechanical compression of a gustatory nerve by the orthodontic wire; and (ii) disturbance of blood supply to a gustatory nerve by edema that developed in nerve tissues around the wire. The patient's retention of a normal threshold for the recognition of sweet tastes is not fully understood.
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ranking = 1
keywords = sweet
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2/4. Unusual complication of tonsillectomy: taste disturbance and the lingual branch of the glossopharyngeal nerve.

    taste disturbance is an unusual complication of tonsillectomy of which there are very few reports in the literature. The possible causes of this rare complication are: (1) direct or indirect damage to the glossopharyngeal nerve or its lingual branch (LBGN), (2) lack of dietary zinc, and (3) habitual drug intake. We report a 41-year-old man, who complained of taste disturbance following tonsillectomy that was performed for chronic tonsillitis and unilateral (left) tonsillar hypertrophy. During surgery, hypertrophic tonsils were found to be sited deeply into the tonsillar bed, especially at the lower pole of the left tonsil. Pathologic examination following tonsillectomy revealed a keratinous cyst and chronic infection at the left tonsil, and lymphoid hyperplasia and chronic infection at the right tonsil. Although his complaint had been getting better, qualitative examination of his taste function revealed bilateral impairment of the sense of sweet taste on the base of his tongue two months after the surgery, and a taste disturbance of sweet taste on the left side persisted the 10th month after the surgery. His serum zinc value was normal, and he did not take any drug that could affect his sense of taste. Depending on the literature data, possible indirect damage to the LBGN was suspected as the cause of the taste disturbance. This symptom may be reversible within two years after tonsillectomy, but it can also be irreversible. Therefore, tonsillectomy should be performed with minimal trauma to the tonsillar bed, especially when there is an additional pathology extending into the lower pole, and such a patient should be informed of the risk of post-operative taste disturbance after tonsillectomy as being one of the rare complications of this surgery.
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ranking = 1
keywords = sweet
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3/4. Unpleasant sweet taste: a symptom of SIADH caused by lung cancer.

    A 56 year old woman with large cell lung carcinoma complained of an unpleasant sweet taste (dysgeusia). She developed hyponatraemia caused by the syndrome of inappropriate antidiuretic hormone secretion (SIADH). dysgeusia disappeared when serum sodium normalised and recurred when hyponatraemia relapsed. dysgeusia was the initial and only symptom of SIADH in this case.
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ranking = 2.5
keywords = sweet
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4/4. Sweet taste (dysgeusia). The first symptom of hyponatremia in small cell carcinoma of the lung.

    Three patients with small cell carcinoma of the lung presented with a persistent unpleasant sweet taste as their initial and only symptom. On further evaluation, they were found to have hyponatremia secondary to the syndrome of inappropriate secretion of antidiuretic hormone. In each case, resolution of the sweet taste paralleled an increase in serum sodium concentration after water restriction alone. Linkage of the sweet taste with a low serum sodium concentration strongly implicates hyponatremia--rather than tumor, antidiuretic factor, medications, or chemotherapy--as the central mechanism responsible for this previously unreported (to our knowledge) sentinel symptom of small cell carcinoma of the lung.
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ranking = 1.5
keywords = sweet
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