Which of the following symptoms is NOT associated with diabetic coma?

C is the correct choice because excessive urination is actually a symptom associated with diabetic coma. In diabetes, especially when blood sugar levels are significantly elevated, the body attempts to rid itself of excess glucose through the urine, leading to polyuria, or excessive urination.

In contrast, the other symptoms listed have different associations with diabetic coma. High blood sugar, or hyperglycemia, is a prominent feature of both diabetic ketoacidosis (DKA) and hyperglycemic hyperosmolar state (HHS), which are conditions that can lead to a diabetic coma.

The slow onset of symptoms is characteristic of HHS, where the symptoms develop over days to weeks, distinguishing it from DKA, which may have a more rapid onset.

Deep rapid breathing, known as Kussmaul respiration, is commonly seen in DKA as the body attempts to compensate for metabolic acidosis resulting from ketone production.

Thus, understanding these symptom patterns is crucial in recognizing and managing diabetic emergencies effectively.