AI Summary Overview
What Is Hypoglycaemia?
Hypoglycaemia is the medical term for low blood sugar, during which the blood glucose level falls below normal parameters. For people with diabetes, it is below 70 mg/dL, whereas for those without diabetes, it is below 55 mg/dL, accompanied by active symptoms of the condition.
Generally, the brain requires glucose as its primary energy source, so a decrease in blood sugar levels can cause symptoms such as shakiness, confusion, and loss of consciousness.
Normally, when blood sugar drops, the body responds by releasing hormones such as glucagon and adrenaline to raise blood sugar again. If the bodys backup defence mechanism system is impaired or overwhelmed (especially when taking diabetes drugs), a hypoglycaemic episode occurs.
Hypoglycaemia is classified as:
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Mild: Symptoms are present; the person is capable of self-treatment (by eating or drinking)
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Moderate: Noticeable symptoms; support might be required
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Severe: Loss of consciousness or seizure; emergency medical help is needed.
Types of Hypoglycaemia
Hypoglycaemia can be of the following types:
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Diabetic Hypoglycaemia
Diabetic hypoglycaemia is the most common type of this condition. It can be triggered by skipping or delaying meals, excessive physical activity, taking too much insulin or medication, or consuming insufficient carbohydrates. It occurs in people with type 1, type 2, or gestational diabetes and those who are taking insulin or some oral blood sugar-lowering medicines.
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Reactive Postprandial/ After-meal Hypoglycaemia
A high-carbohydrate meal can cause blood sugar to drop within 2-5 hours, which may lead to reactive hypoglycaemia. This can happen to any person, with or without diabetes. It is thought to result from excessive insulin release after eating. In some cases, it may also be associated with a history of gastrointestinal surgery.
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Fasting Hypoglycaemia
Fasting hypoglycaemia occurs when blood sugar levels fall after fasting or during illness. It may be associated with conditions such as liver disease, kidney failure, hypothyroidism, or rare insulin-producing tumours of the pancreas (insulinomas).
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Drug-Induced Hypoglycaemia
Drug-induced hypoglycaemia occurs when medications cause blood sugar levels to drop too low. It may be associated with certain antibiotics, antimalarial drugs, and other medications that affect the body's glucose balance.
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Less Common Types of Hypoglycaemia
A few distinct types of pathological categories include factitious hypoglycaemia (caused by accidental/intentional use of diabetes meds by a non-diabetic), Hiratas Disease (autoimmune hypoglycaemia) and NICTH (non-islet cell tumour hypoglycaemia).
How Common Is Hypoglycaemia in India?
Hypoglycaemia is directly linked to the scale of India's diabetes burden. In a pan-India study involving more than 19.6 lakh HbA1c samples collected, 27.18% of the adults screened had diabetes, and 22.25% had prediabetes.
The real burden of hypoglycaemia is difficult to estimate, as access to diagnosis and health care services varies from one region to another.
Conditions like high blood pressure, coronary artery disease, chronic kidney disease, and liver disease typically increase hypoglycaemia risk in Indian patients, especially the elderly.
What Are the Symptoms of Hypoglycaemia
Symptoms of hypoglycaemia include:
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Shakiness or trembling
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Sweating
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Hunger
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Dizziness or lightheadedness
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Headache
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Rapid or irregular heartbeat (palpitations)
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Anxiety or nervousness
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Irritability or mood changes
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Difficulty concentrating
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Blurred vision
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Weakness or fatigue
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Tingling or numbness of the lips, tongue, or cheeks
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Confusion
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Slurred speech
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Poor coordination or clumsiness
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Drowsiness
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Seizures (in severe cases)
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Loss of consciousness (in severe cases)
Note: Symptoms can vary from person to person and may develop suddenly. Severe hypoglycaemia requires immediate medical attention.
What Causes Hypoglycaemia?
Causes that can trigger hypoglycaemia include:
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Too Much Insulin or Diabetes Medicine: If you take too much insulin or diabetes medicine, your blood sugar can drop too low.
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Skipping or Delaying Meals: Missing meals, eating too little, or delaying meals can result in low blood sugar, especially in people taking diabetes medications.
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Too Much Physical Activity: Prolonged or intense exercise increases the body's glucose use. Such activity can lead to hypoglycaemia if not balanced with food intake or medication adjustments.
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Alcohol: Alcohol consumption prevents the liver from releasing the stored glucose to the bloodstream.
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Liver Disease: Liver disorders can affect glucose storage and release. This condition causes difficulty in maintaining normal blood sugar levels.
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Kidney Failure: Reduced kidney function can slow the removal of insulin and certain medications from the body, increasing their effects and raising the risk of hypoglycaemia.
Some other causes are hypothyroidism, insulinoma, or other conditions that cause the adrenal glands to stop making essential hormones like cortisol.
What Are the Complications Associated with Hypoglycaemia?
Repeated or severe episodes of hypoglycaemia can lead to serious health complications, including:
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Heart Problems: Severe hypoglycaemia can cause abnormal heart rhythms and increase the risk of heart attacks.
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Brain Damage: Prolonged and severe hypoglycaemia can cause permanent brain injury.
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Hypoglycaemia Unawareness: Repeated episodes can reduce the body's warning signs of low blood sugar.
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Falls and Injuries: Dizziness, weakness, and confusion can increase the risk of falls, especially in older individuals.
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Aspiration: Loss of consciousness can cause food, liquids, or vomit to enter the lungs.
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Coma: Severe untreated hypoglycaemia can lead to a hypoglycaemic coma and require intensive medical care.
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Driving Risks: Low blood sugar can impair concentration, judgement, and reaction time, increasing the risk of accidents.
When Should I See My Healthcare Provider?
If you experience any of these, seek immediate medical help:
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You experience sudden unconsciousness.
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You experience a seizure for the first time.
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Your blood sugar stays below 70 mg/dL (55 mg/dL for non-diabetics) even after you eat or drink something sugary.
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You have frequent episodes of low blood sugar despite following your treatment plan.
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You develop hypoglycaemia without a known cause and are not taking diabetes medications.
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You are pregnant and experience frequent episodes of hypoglycaemia.
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family member develops symptoms of hypoglycaemia, even if they improve quickly.
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You have difficulty recognising the signs and symptoms of low blood sugar.
How Is Hypoglycaemia Diagnosed?
The diagnosis of hypoglycaemia includes the following tests:
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Blood Glucose Test
A blood glucose test measures the level of glucose in the blood using a finger-prick test or a laboratory blood sample.
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Whipple's Triad
Whipple's Triad is the standard diagnostic framework used to confirm hypoglycaemia. A diagnosis is confirmed when all three of the following criteria are present:
Criterion What It Means Low plasma Glucose Blood glucose below 55 mg/dL at the time of symptoms Symptoms Present Shakiness, sweating, confusion, or other hypoglycaemia signs Symptom Resolution Symptoms disappear after blood glucose is corrected Note: 70 mg/dL is the clinical alert threshold for those with diabetes (diabetic hypoglycaemia), whereas 55 mg/dL is the strict diagnostic threshold for those without diabetes.
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Extended Fasting Test (72-Hour Fast)
This supervised test may be performed when hypoglycaemia is suspected in people who are not taking diabetes medications.
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Mixed Meal Tolerance Test
This test is used to evaluate suspected reactive (postprandial) hypoglycaemia. Blood glucose levels are measured at regular intervals after a standardised meal to determine whether they drop abnormally after eating.
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Diagnostic Overview Table
Test Purpose What is Evaluated Blood Glucose Test Confirms low blood sugar levels. Current blood glucose concentration. Whipple's Triad Confirms true hypoglycaemia. Low blood glucose, symptoms of hypoglycaemia, and relief from symptom after glucose correction. Extended Fasting Test (72-Hour Fast) Investigates unexplained hypoglycaemia. Insulin overproduction, insulinoma, or hormonal deficiencies. Mixed Meal Tolerance Test Evaluates reactive (postprandial) hypoglycaemia. Blood glucose changes after a standardised meal.
What Are the Treatments or Management of Hypoglycaemia?
Treatment strategies for managing hypoglycaemia include:
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Immediate Treatment: The 15-15 Rule
- Eat 15 Grams of Fast-Acting Carbohydrates: Consume 15 grams of fast-acting carbohydrates, such as glucose tablets, fruit juice, regular soda, or sugar dissolved in water.
- Check-in After 15 Minutes: Recheck your blood glucose after 15 minutes.
- Repeat Process: If your blood glucose remains below 70 mg/dL, repeat the process.
- Light Snack: Once blood glucose returns to normal, eat a snack or meal if your next meal is not due soon.
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Lifestyle Management
- Eat Meals Regularly: Avoid skipping or delaying meals.
- Follow a Balanced Diet: Include complex carbohydrates, protein, and fibre in meals.
- Exercise Safely: Check blood glucose before and after exercise when appropriate.
- Limit Alcohol: Avoid drinking alcohol on an empty stomach.
- Monitor Blood Glucose: Regular monitoring can help identify patterns and prevent episodes.
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Medical Management
- Adjust Diabetes Medications: Doctors check HbA1c to ensure that a long-term diabetes therapy is not too aggressive. Your healthcare provider may modify the dose or timing of insulin or other diabetes medications.
- Review Treatment Plans: Alternative medications may be recommended if hypoglycaemia occurs frequently.
- Treat the Underlying Cause: For non-diabetic hypoglycaemia, treatment focuses on managing the underlying condition, such as an insulinoma, hormonal disorder, or other medical condition.
In severe hypoglycaemia cases, if the person is unconscious or having a seizure, a healthcare professional may administer a glucagon injection or give intravenous (IV) glucose to control blood sugar levels.
Is Hypoglycaemia Covered by Health Insurance?
If hypoglycaemia occurs due to a pre-existing disease (PED) like Diabetes Mellitus, which is usually covered under health insurance, its treatment may be covered as per policy terms. A waiting period of up to 36 months may apply before you can claim any settlement.
Coverage generally includes the following, subject to policy terms and conditions:
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HHospital stays
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HICU care
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HDiagnostic tests
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HMedical expenses
Some comprehensive plans may also cover outpatient consultations and blood glucose monitoring.
However, hypoglycaemia itself is usually not covered under critical illness plans. Depending on the policy, complications like coma, stroke, or heart attack may be covered.
Always review your policy documents or consult your insurer for exact coverage details.
How Much Health Insurance Coverage Is Needed for Hypoglycaemia?
Mild episodes of hypoglycaemia can often be managed at home with little or no medical expense. However, severe hypoglycaemia may require emergency treatment, hospitalisation, glucose infusions, and continuous monitoring, which can incur high costs.
For individuals with diabetes, especially those using insulin or certain diabetes medications, it is generally advisable to have a health insurance plan with a sum insured of ₹5 lakh.
Those with additional health conditions, such as kidney disease, heart disease, or diabetic complications, may find a higher coverage amount of ₹10 lakh or more suitable.
FAQs
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Q1. What does hypoglycaemia mean?
Ans: Hypoglycaemia is a condition that occurs when blood sugar levels fall below 70 mg/dL in people with diabetes, or below 50 mg/dL in non-diabetic individuals who have symptoms of low blood sugar. -
Q2. What are the first symptoms of hypoglycaemia?
Ans: The first symptoms of hypoglycaemia often include sudden shakiness, cold sweats, a rapid heartbeat, and intense hunger. -
Q3. Is it possible for hypoglycaemia to happen when there's no diabetes?
Ans: Yes, hypoglycaemia can occur in people without diabetes. Possible causes include liver disease, kidney failure, hormonal deficiencies, certain medications, or rare tumours such as insulinoma.
