Which is NOT a symptom of diabetes?

Painful urination is not a typical symptom of diabetes. The primary symptoms associated with diabetes include fatigue, polyuria (increased urination), and polydipsia (increased thirst).

Fatigue occurs in diabetes due to the body's inability to effectively utilize glucose for energy, leading to feelings of tiredness. Polyuria results from the kidneys trying to excrete excess glucose, which pulls water with it and causes increased urination. Polydipsia is a compensatory mechanism as the body loses more fluid through excessive urination, leading to increased thirst.

In contrast, painful urination generally indicates a urinary tract infection or irritation in the urinary tract rather than diabetes itself. Therefore, while the other symptoms are directly related to how diabetes affects the body's metabolism and fluid balance, painful urination does not fall under the classic symptoms associated with diabetes.