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Recognizing Severe Hypoglycemia: Emergency Signs and Immediate Actions
18 Sep 2025 By Eleanna O. De Filippis, M.D., Ph.D.

Recognizing Severe Hypoglycemia: Emergency Signs and Immediate Actions

Severe hypoglycemia, also known as severely low blood sugar, is a dangerous condition that can quickly become a medical emergency. It requires immediate recognition and swift action to prevent serious complications like seizures, loss of consciousness, and even brain damage. This article will detail the emergency signs of severe hypoglycemia and outline the necessary immediate actions to take. Understanding this information can be life-saving, both for individuals living with diabetes and for those around them.

What is Severe Hypoglycemia?

Hypoglycemia occurs when the glucose (sugar) level in the blood drops too low, typically below 70 mg/dL. While mild hypoglycemia can usually be managed with quick carbohydrates, severe hypoglycemia is characterized by symptoms that render a person unable to treat themselves. This is often because the low blood sugar significantly impairs cognitive function. This impairment makes them reliant on others for assistance.

Emergency Signs of Severe Hypoglycemia

Recognizing the signs of severe hypoglycemia is critical. The symptoms can vary from person to person, but some of the most common include: Severe Hypoglycemia How To Recognize And Respond To A Low Blood Sugar Emergency

  • Loss of Consciousness: This is one of the most alarming signs. The person becomes unresponsive and may collapse.
  • Seizures: Low blood sugar can disrupt the normal electrical activity in the brain, leading to seizures.
  • Confusion or Disorientation: The person may seem extremely confused, unable to answer simple questions, or unsure of their surroundings. This is a telltale sign their brain function is impacted.
  • Difficulty Speaking: Slurred speech or the inability to speak at all are indications of a serious problem.
  • Unusual Behavior: This can include aggression, agitation, or acting in a way that is out of character for the individual.
  • Inability to Eat or Drink: The person may be conscious but physically unable to swallow due to weakness or confusion.
  • Sweating profusely: More than usual sweating accompanied by confusion may be an early sign before they lose consciousness.
  • Pale skin: Very pale and clammy skin is another potential indication.

It is crucial to note that not all symptoms may be present at the same time. The combination and severity of symptoms can vary widely. A Simple Guide To The Glycemic Index Gi For Blood Sugar Balance

Immediate Actions to Take

When severe hypoglycemia is suspected, the following steps should be taken immediately:

  1. Call for Emergency Medical Assistance: The first and most important step is to call your local emergency number (911 in the US) without delay. Inform the dispatcher that the person is experiencing severe hypoglycemia and is unresponsive.
  2. Administer Glucagon (If Available and You Know How): Glucagon is a hormone that raises blood sugar levels. It is often prescribed to individuals at risk of severe hypoglycemia. It is given as an injection. If you have a glucagon kit and know how to administer it, do so immediately. Follow the instructions provided with the kit carefully. Note: It's important to get proper training from a healthcare professional on how to use a glucagon kit before an emergency occurs.
  3. Do NOT Give Food or Drink to an Unconscious Person: Attempting to give food or drink to an unconscious person can lead to choking, which can be life-threatening. Wait for medical professionals to arrive.
  4. Position the Person on Their Side (Recovery Position): If the person is unconscious but breathing, position them on their side in the recovery position to prevent choking if they vomit.
  5. Monitor Breathing and Pulse: While waiting for emergency services, continuously monitor the person's breathing and pulse. If they stop breathing, begin CPR if you are trained to do so.
  6. Provide Information to Emergency Responders: When paramedics arrive, provide them with any relevant medical information about the person, including their diabetes diagnosis, any medications they are taking, and the events leading up to the emergency.

Importance of Medical Identification

People with diabetes should wear a medical identification bracelet or necklace indicating their condition. This can alert bystanders and emergency responders to the possibility of hypoglycemia if the person is found unconscious or confused. Ensure that the medical ID includes vital information like the type of diabetes, allergies, and emergency contact details. Having this medical ID is vital for correct identification and action. Best Breakfast Foods To Prevent Morning Blood Sugar Spikes

Understanding Glucagon

Glucagon is a life-saving medication that can counteract the effects of severe hypoglycemia. It works by stimulating the liver to release stored glucose into the bloodstream. Glucagon kits are relatively easy to use, but it's essential to understand the correct technique:

  1. Preparation: Check the expiration date of the glucagon kit. Ensure the kit is not expired before use. Remove the cap from the glucagon syringe and the vial containing the powdered glucagon.
  2. Mixing: Insert the needle of the syringe into the vial and inject all the liquid into the powder. Gently swirl the vial to mix the solution until the powder is completely dissolved.
  3. Administration: Draw the mixed solution back into the syringe. Inject the glucagon into the person's thigh or arm muscle.
  4. After Injection: Once the glucagon is administered, call emergency services if you haven't already. Even if the person regains consciousness quickly, professional medical evaluation is essential. It’s also very common for someone who gets glucagon to vomit, thus the recovery position mentioned above.

Prevention of Severe Hypoglycemia

While immediate action is critical in the event of severe hypoglycemia, prevention is even better. Here are some key strategies to reduce the risk:

  • Regular Blood Sugar Monitoring: Frequent blood sugar checks, especially before meals, exercise, and bedtime, can help identify trends and prevent significant drops.
  • Meal Planning: Consistent meal times and balanced meals that include carbohydrates, protein, and healthy fats can help stabilize blood sugar levels.
  • Medication Management: Take diabetes medications as prescribed by your doctor. Understand how your medications affect your blood sugar and adjust the dosage as needed, in consultation with your healthcare team.
  • Exercise Precautions: Adjust insulin doses and carbohydrate intake before, during, and after exercise to prevent hypoglycemia. Carry a quick source of carbohydrates with you when you exercise.
  • Education: Learn to recognize the early signs of hypoglycemia and how to treat it. Educate family members, friends, and coworkers about diabetes and what to do in an emergency.

Hypoglycemia Unawareness

Some people with diabetes, especially those who have had the condition for many years, may experience hypoglycemia unawareness. This means they no longer experience the early warning signs of low blood sugar. This can be particularly dangerous because they are more likely to experience severe hypoglycemia without any prior warning. If you think you may have hypoglycemia unawareness, talk to your healthcare provider about strategies to improve your awareness of low blood sugar.

Table: Immediate Actions vs. Prevention of Severe Hypoglycemia

Action Purpose Timing
Call Emergency Services Ensure professional medical help arrives promptly. Immediately upon suspecting severe hypoglycemia.
Administer Glucagon Raise blood sugar levels quickly. As soon as possible, if available and you know how to administer it.
Do Not Give Food/Drink if Unconscious Prevent choking hazards. Ongoing while the person is unresponsive.
Position on Side (Recovery Position) Prevent choking if vomiting occurs. While waiting for emergency services.
Regular Blood Sugar Monitoring Identify blood sugar trends and prevent extreme lows. Daily, at consistent intervals.
Consistent Meal Planning Stabilize blood glucose levels through regular carbohydrate intake. At set meal times.
Appropriate Medication Adjustment Help balance medications that lead to extreme drops in blood sugar. Consult your healthcare team to manage medication doses.

Conclusion

Severe hypoglycemia is a serious condition that requires immediate recognition and swift action. Knowing the emergency signs, understanding how to administer glucagon, and following the recommended steps can be life-saving. Furthermore, adopting preventive measures such as regular blood sugar monitoring and careful medication management can significantly reduce the risk of severe hypoglycemic events. By being prepared and proactive, individuals with diabetes and their support networks can effectively manage hypoglycemia and minimize its potentially devastating consequences. Seek professional medical training on how to correctly identify and manage this serious risk related to diabetes.

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