## **Core Concept**
Hyperglycemia in diabetic patients results from a mismatch between insulin availability and insulin requirements. Symptoms occur due to the effects of high glucose levels on various bodily functions, including osmotic diuresis, metabolic acidosis (in the case of diabetic ketoacidosis), and impaired cellular function.

## **Why the Correct Answer is Right**
Polyuria (frequent urination) and polydipsia (excessive thirst) are classic symptoms of hyperglycemia due to osmotic diuresis caused by glucose in the urine. Blurred vision can occur due to changes in the lens of the eye caused by hyperglycemia. However, tremors are not typically listed as a direct symptom of hyperglycemia. Tremors could be associated with various conditions, including hypoglycemia, which is a different condition altogether.

## **Why Each Wrong Option is Incorrect**
* **Option A:** Polyuria is a correct symptom of hyperglycemia due to the osmotic effect of glucose in the urine leading to increased urine production.
* **Option B:** Polydipsia is a direct consequence of polyuria, as the body tries to compensate for the loss of fluids.
* **Option C:** Blurred vision can occur in hyperglycemia due to the osmotic effects on the lens of the eye.

## **Clinical Pearl / High-Yield Fact**
A key clinical point to remember is that symptoms of hyperglycemia can sometimes be subtle or absent, especially in early or well-managed diabetes. However, the classic triad of polyuria, polydipsia, and polyphagia (increased hunger) are hallmark symptoms. Rapid recognition and treatment of hyperglycemic emergencies like diabetic ketoacidosis or hyperglycemic hyperosmolar nonketotic syndrome are critical.

## **Correct Answer:** . Tremors