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An alteration in taste is medically referred to as dysgeusia. Such a condition can arise due to a large number of reasons. A lingering sweet taste may be due to the presence of an underlying systemic disease like diabetes, a neurological disturbance, GI disturbances, or an infection.

Diabetes

Diabetes occurs when the body is not able to produce enough insulin or there is an excess amount of glucose intake that causes a spike in blood glucose levels.

This will be reflected in the composition of the saliva as well. Some other symptoms that will be seen are an increased amount of thirst, increased appetite and increased urination. Neurological function is also affected in diabetes, although that is usually a late stage symptom.

Diabetes will cause the saliva to turn sweet, leading to a sweet taste in the mouth.

A diagnosis of diabetes is a life-altering event as this is a metabolic disorder that requires life-long monitoring, treatment and lifestyle changes.

Neurological disturbances

The taste sensation which is related to proper neural transmission from the tongue to the brain can be susceptible to a number of different conditions like Alzheimer's or Parkinson's.

A cyst or a tumor in the brain can also be responsible for an altered taste sensation. Any one of these conditions will require immediate treatment. Other symptoms like memory loss, blurred vision, altered speech or loss of consciousness will also be noticed if the lesion is originating from the brain.

GI disturbances

A condition like Gastroesophageal Reflux Disorder (GERD) causes an acid imbalance in the stomach and causes frequent reflux into the mouth. This condition also creates a sweet taste sensation in the mouth.

A tendency to throw up often, having difficulty eating certain kinds of foods, and a constant feeling of having something in the throat are some of the more common symptoms that will point towards a GERD diagnosis.

Infection

The infection may be viral or bacterial in origin. A viral infection is more likely to attack the nerve directly and is usually associated with reduced immunity. Some common viruses that can affect the nerves and affect taste sensation are ones that all of us are exposed to, however they remain dormant until they have the opportunity to express themselves. This opportunity comes in the form of a depressed immune system.

A bacterial infection can hit the sinuses. Blocked sinuses affect the taste sensation as well. Of course there will be other symptoms associated with a sinus infection such as a change in the tone of the voice and an over-production of mucus, leading to a constant clearing of the throat and nose.

A simple symptom of a sweet taste in the mouth may be isolated and may require no treatment whatsoever.

However, there are a number of other conditions that could cause the same symptom. The best course of action is to visit the doctor and get a checkup done so that necessary treatment can be provided in a timely manner.

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