Which diabetic condition is characterized by a sudden onset?

The condition characterized by a sudden onset is hypoglycemia. Hypoglycemia refers to a rapid drop in blood glucose levels, which can occur quickly, often within minutes to hours. This condition can result from various factors such as missed meals, excessive insulin administration, or increased physical activity. Symptoms of hypoglycemia can include confusion, sweating, trembling, and in severe cases, loss of consciousness or seizures, which can develop abruptly.

In contrast, diabetic ketoacidosis, which typically develops over several hours to days, is marked by a buildup of ketones as a result of insulin deficiency, leading to a gradual onset of symptoms like abdominal pain, nausea, and altered mental status. Hyperglycemic hyperosmolar syndrome also takes longer to develop and is associated with extremely high blood sugar levels without significant ketone production, usually occurring in individuals with type 2 diabetes. Hyperglycemia refers to elevated blood sugar levels but does not specifically address the speed of onset; it can result from various factors and may not present immediate symptoms.

Overall, the sudden onset and immediate danger of hypoglycemia distinguishes it as the condition that aligns with the question's criteria.