A confused 54-year-old female did not eat lunch but took her insulin. She has diabetes and back pain. She localizes to stimuli with both hands equally. Which condition should you suspect?

• A. hypoglycemia.
• B. opioid overdose.
• C. hypertensive crisis.
• D. stroke.

Answer: (A)

When a patient with diabetes on insulin does not eat and still takes insulin, hypoglycemia becomes the leading concern. Low blood glucose causes the brain to run out of fuel, leading to global neuro symptoms such as confusion or altered mental status rather than a specific, one-sided neurologic deficit. The fact that she localizes to stimuli with both hands equally suggests there isn’t a focal brain event like a stroke affecting one side of the body; that symmetry points away from a stroke and toward a metabolic derangement like hypoglycemia.

Other conditions don’t fit this picture as well. Opioid overdose would typically present with pinpoint pupils and respiratory depression rather than just confusion, and hypertensive crisis usually brings a different symptom set such as severe headache or chest symptoms. A stroke often presents with unilateral weakness, facial droop, or speech changes rather than global confusion with preserved bilateral responsiveness.

In this scenario, hypoglycemia is the most likely cause to suspect. If this were an actual patient, you’d confirm with a fingerstick glucose and treat accordingly: provide fast-acting carbohydrate if conscious and able to swallow, or administer IV dextrose or glucagon if the patient is not protecting the airway or cannot swallow.