A clinical feature that distinguishes a hypoglycemic reaction from a ketoacidosis reaction is:
Correct Answer: B
Rationale: Diaphoresis, which refers to excessive sweating, is a common clinical feature seen in a hypoglycemic reaction. Hypoglycemia occurs when the blood sugar level drops too low, leading to symptoms like sweating, shakiness, confusion, and rapid heartbeat. On the other hand, ketoacidosis is a serious complication of diabetes that occurs when there is a lack of insulin, causing high blood sugar levels and the body to break down fat for energy. Symptoms of ketoacidosis include nausea, vomiting, abdominal pain, and fruity-smelling breath, but diaphoresis is not typically a prominent feature. Therefore, diaphoresis can help clinicians differentiate between hypoglycemic and ketoacidosis reactions.