Which of the following lists are signs and symptoms of hypoglycemia?

• A. Sweating, confusion, anxiety, tachycardia
• B. Polyphagia, weight gain, edema
• C. Nausea, vomiting, abdominal pain
• D. Visual disturbances, fatigue

Answer: (A)

Recognizing hypoglycemia hinges on noticing autonomic and neuroglycopenic signs that occur when blood glucose drops. Sweating and tachycardia arise from the body's counter-regulatory response to low glucose, often with anxiety as a subjective feeling. Confusion reflects the brain’s impaired glucose supply, a hallmark of neuroglycopenia. Together these signs give a classic picture of hypoglycemia, since the body first tries to rally its defenses and the brain then shows the impact of insufficient glucose.

The other sign clusters don’t fit as well: polyphagia, weight gain, and edema point more to chronic hyperglycemia and fluid balance issues rather than an acute drop in glucose. Nausea, vomiting, and abdominal pain are GI symptoms not typically caused by hypoglycemia. Visual disturbances and fatigue can occur in various conditions and don’t provide the same specific indication of low blood sugar, especially without accompanying autonomic symptoms.

Keep in mind that some individuals, like older adults or those with autonomic dysfunction, may have blunted autonomic signs, so any new confusion, dizziness, or weakness during a possible hypoglycemic event should prompt checking blood glucose.