Which of the following symptoms is associated with diabetes?

Frequent urination and excessive thirst are classic symptoms associated with diabetes. In diabetes, particularly when blood sugar levels are elevated, the kidneys work harder to filter and absorb the excess glucose. This leads to increased urine production, or polyuria, which in turn causes dehydration and triggers excessive thirst, known as polydipsia. These symptoms are important indicators of diabetes and often prompt individuals to seek medical advice for further evaluation and diagnosis.

The other options, while they may have health implications, do not specifically highlight the hallmark symptoms of diabetes and are not as directly connected to the condition's pathophysiology. Rapid hair growth, high blood pressure, and skin rash might be linked to other health issues but do not serve as primary indicators of diabetes itself.