Which of the following is NOT a common symptom of diabetes?

In the context of diabetes, understanding the common symptoms is crucial. Polyuria, polydipsia, and fatigue are well-documented symptoms associated with both type 1 and type 2 diabetes.

Polyuria refers to the increased frequency of urination, which occurs due to high blood sugar levels that cause the kidneys to excrete excess glucose, leading to increased urine production. Polydipsia is excessive thirst, a direct response to the dehydration that follows polyuria. Fatigue is also a common symptom, often resulting from the body's inability to effectively use glucose for energy, which can leave individuals feeling tired and lethargic.

Weight gain, on the other hand, is not a common symptom of diabetes. In fact, many individuals with type 2 diabetes may experience weight loss due to the body's inability to utilize glucose properly, as well as potential changes in appetite. Therefore, weight gain does not align with the typical profile of diabetes symptoms and is considered the correct answer to the question.