Which of the following symptoms is commonly associated with diabetes?

Polyuria is a common symptom associated with diabetes, particularly in individuals with uncontrolled blood sugar levels. This condition arises when the kidneys attempt to excrete excess glucose in the urine. As glucose is expelled, it draws water along with it, leading to increased urine production. This excessive urination can lead to dehydration, which is another common concern for those managing diabetes.

In contrast, bradycardia and increased heart rate are not specifically linked to diabetes and may indicate other cardiovascular issues or physiological responses. Swollen lymph nodes typically signify an infection or immune response, not a direct complication of diabetes. Therefore, polyuria stands out as a hallmark symptom indicating potential glucose management issues in diabetic patients.