MCC Block 2 Practice Test

Which is a sign of hyperglycemia?

Polydipsia Hypotension Cough Rash

Correct Answer:

Polydipsia

Explanation:

High blood sugar leads to osmotic diuresis: when glucose is elevated, the kidneys spill more glucose into the urine, and water follows. That causes dehydration, which triggers increased thirst. So polydipsia is a classic sign of hyperglycemia. The other options don’t fit this pattern—cough points to respiratory issues, rash to skin conditions, and low blood pressure isn’t a typical direct sign of high glucose (though severe dehydration can affect blood pressure, it’s not a defining symptom of hyperglycemia).

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