A nurse is providing discharge teaching to the parents of a child who has a new diagnosis of diabetes mellitus. Which statement made by the parents indicates an understanding of the teaching?

A. "Sweating can occur with hyperglycemia" is incorrect because sweating is a symptom of hypoglycemia, not hyperglycemia. Hyperglycemia typically presents with polyuria, polydipsia, dehydration, and fatigue. B. "My son might have nausea and vomiting with hypoglycemia" is incorrect because nausea and vomiting are more commonly associated with hyperglycemia or diabetic ketoacidosis (DKA), not low blood glucose. C. "My son might complain of feeling shaky when he has a low blood glucose level" is correct. Symptoms of hypoglycemia include shakiness, sweating, irritability, palpitations, hunger, and sometimes confusion. These signs reflect the body’s response to low circulating glucose, primarily mediated by adrenergic stimulation. Recognizing these early signs allows for prompt intervention, such as administering fast-acting glucose. D. "The onset of low blood glucose usually occurs slowly" is incorrect because hypoglycemia can develop rapidly, often within minutes, especially in children who are active, miss a meal, or take insulin. Slow onset is more characteristic of chronic hyperglycemia, not acute hypoglycemia.