Signs and symptoms of hypoglycemia/insulin shock include all of the following EXCEPT:

The correct choice highlights that slow onset is not characteristic of hypoglycemia or insulin shock. Typically, hypoglycemia presents with rapid onset symptoms due to a sudden drop in blood sugar levels. This swift decline can lead to acute manifestations such as increased heart rate, cold sweats, confusion, tremors, and anxiety.

In contrast, the other symptoms listed—such as increased heart rate, cold sweats, and confusion—are indeed common signs of hypoglycemia. Increased heart rate occurs as the body responds to the stress of low blood sugar, attempting to restore glucose levels. Cold sweats are a manifestation of the sympathetic nervous system's response to hypoglycemia, which actively tries to counteract the condition. Confusion is a result of the brain not receiving enough glucose, which is its primary energy source.

In summary, slow onset is not typical for hypoglycemia; symptoms usually appear quickly, making it crucial for patients and healthcare providers to recognize and respond promptly.