Classic signs and symptoms of hypoglycemia include:

• A. warm, dry skin; hunger; abdominal pain; and deep, slow respirations
• B. cool, clammy skin; weakness; tachycardia; and rapid respirations
• C. cold, clammy skin; bradycardia; hunger; and deep, rapid respirations
• D. warm, dry skin; irritability; bradycardia; and rapid respirations

Answer: (B)

Low blood glucose triggers a sympathetic response that produces the classic signs of hypoglycemia: cool, clammy skin from sweating and pale vasoconstriction, weakness from the brain and muscles not getting enough fuel, and an elevated heart rate as the body tries to raise glucose levels. Rapid breathing can occur as part of the overall stress response and to help compensate for metabolic stress. These features together—cool, clammy skin with weakness and fast pulse, sometimes accompanied by rapid breathing—best match the typical hypoglycemia pattern.

The other patterns don’t fit as well: warm, dry skin suggests dehydration or high blood sugar rather than hypoglycemia; bradycardia is not typical in hypoglycemia; and deep, rapid respirations are more characteristic of metabolic acidosis such as diabetic ketoacidosis rather than simple hypoglycemia.