Which of the following is NOT a symptom of hyperglycaemia?

The correct answer is that hypoglycemia is not a symptom of hyperglycemia. Hyperglycemia refers to elevated blood glucose levels often associated with conditions like diabetes, and its common symptoms include excessive thirst (polydipsia), fatigue, and vision changes due to the effects of high glucose levels on the body's metabolism and fluid balance.

Polydipsia occurs as the body attempts to manage high sugar levels by increasing fluid intake. Fatigue is a result of the body's inability to utilize glucose effectively for energy, which can leave the individual feeling tired despite the presence of high blood sugar. Vision changes can occur due to osmotic shifts in the eye's lens caused by elevated glucose, leading to blurred vision or other visual disturbances.

Hypoglycemia, on the other hand, is characterized by low blood sugar levels and presents symptoms such as shakiness, sweating, confusion, and irritability. The confusion between hyperglycemia and hypoglycemia is common, but they represent opposite states in terms of blood glucose levels and their associated symptoms. Therefore, hypoglycemia does not fit as a symptom of hyperglycemia, confirming it as the correct answer in this context.