Final answer:
Diabetes mellitus is characterized by high blood sugar levels and symptoms like polyuria, polydipsia, polyphagia, and glycosuria. Hypoglycemia is not a symptom of diabetes mellitus; rather, it is a condition of low blood sugar levels.
Step-by-step explanation:
Diabetes mellitus is characterized by several symptoms, but hypoglycemia is not typically one of them. Instead, diabetes mellitus is identified by elevated blood glucose levels and the symptoms of hyperglycemia. The condition is marked by polyuria (excessive urination), polydipsia (increased thirst), polyphagia (increased hunger), and glycosuria (presence of glucose in the urine).
Thus, the correct answer to the question "Diabetes mellitus is characterized by the following except?" would be 1) hypoglycemia. Hypoglycemia is a condition where there is an abnormally low level of glucose (sugar) in the blood, often due to excessive insulin or a poor diet, and is not a symptom of diabetes mellitus.