What are signs of hyperglycemia?

Increased thirst and frequent urination are hallmark signs of hyperglycemia, which occurs when there is an excess of glucose in the bloodstream. When blood sugar levels rise, the kidneys attempt to excrete the excess glucose through urine, leading to increased urination (polyuria). This loss of fluid can result in dehydration, which manifests as increased thirst (polydipsia). These symptoms are key indicators that the body is struggling to manage blood glucose levels effectively.

The other choices listed tend to be associated with different conditions or symptoms. Hypotension and dizziness may occur due to various health issues, but they are not specific indicators of hyperglycemia. Severe headaches and blurred vision can occur with both hyperglycemia and other medical conditions, but they are not definitive symptoms. Cold sweats and confusion are more aligned with hypoglycemia, where blood sugar levels drop significantly, rather than when they are elevated. Therefore, the signs of increased thirst and frequent urination distinctly point to hyperglycemia.