Why would i have a sweet taste in my mouth? it use to go away but now i've had the taste in my mouth for a week

An : An alteration in taste or smell may be a secondary process in various disease states, or it may be the primary symptom. The distortion in the sense of taste is the only symptom, and diagnosis is usually complicated since the sense of taste is tied together with other sensory systems, primarily the sense of smell. The sense of taste is controlled by specialized tissue tissue on the tongue that is innervated by three cranial nerves...The facial (v) controls the anterior 2/3rds of the tongue, the glossopharyngeal (ix) controls the posterior 1/3rd of the tongue and the vagus (x) which controls the back of the throat. All of this is supplemented by the 2nd cranial nerve (olfactory) that controls the sense of smell. Problems with one or all nerves can result in an alteration in the sense of taste. It would be helpful to have more information regarding you health (do you have diabetes, have you suffered a significant blow to the head, do you have reflux), what types of food have you been eating (sugars, artificial sweeteners) and to be able to perform taste tests. I recommend that you see an your physician and an oral and maxillofacial surgeon for an evaluation.

Hershey's Kisses: If you brush & floss twice regularly, and clean your tongue daily have your physician check your blood sugar levels. You can also try using a Waterpik to see if it helps.

Dysgeusia: is a change in your sense of taste due to a variety of causes; from anxiety to dental problems. Dysgeusia is not very common. Fortunately, many of the causes are temporary and not life-threatening, but the disorder does affect your quality of life. See your PCP for neurological exam and evaluation.