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Understanding Your Child's Blood Sugar Levels: Signs to Watch For

Alan Lucks | MD

Medically reviewed by Alan Lucks | MD, Alan Lucks MDPC Private Practice - New York on September 30th, 2023.

Key Takeaways

  • Normal blood glucose ranges from 70-100 mg/dL when fasting, with post-meal levels staying below 140 mg/dL—readings above 200 mg/dL require immediate medical attention.

  • Hypoglycemia symptoms (shakiness, sweating, confusion) develop when levels drop below 70 mg/dL and can progress to seizures within 15-30 minutes if untreated.

  • Children with Type 1 diabetes typically lose weight rapidly over 2-4 weeks before diagnosis, drinking up to 1-2 gallons of water daily due to excessive urination.

  • The "15-15 rule" treats mild low blood sugar: give 15 grams of fast-acting carbs (3-4 glucose tablets), wait 15 minutes, then recheck levels.

  • Ketones appear in urine when blood sugar exceeds 250 mg/dL for several hours, signaling diabetic ketoacidosis—a life-threatening emergency requiring immediate hospitalization.

As a parent, you want to ensure your child is healthy and thriving. One important aspect of their health is their blood sugar levels. While most parents don't regularly check their child's blood sugar, there are signs that may indicate if their levels are too high or too low. In this article, we'll explore the symptoms of high and low blood sugar in children and when to seek medical attention.

Signs of High Blood Sugar in Children

If your child's blood sugar levels remain elevated regardless of what they eat, it could be a sign of diabetes. Here are some indications that your child's blood sugar may be too high:

  • Frequent trips to the bathroom, as their body tries to flush out excess glucose

  • Excessive thirst due to fluid loss from frequent urination

  • Unexplained weight loss despite a large appetite, as their body breaks down muscle and fat for energy

  • Fatigue, moodiness, or irritability due to lack of energy

  • Vision problems caused by fluid being pulled from the eyes

  • Yeast infections in girls or diaper rashes in babies, as yeast thrives on sugar

Understanding Your Child's Blood Sugar Levels: Signs to Watch For

Signs of Low Blood Sugar in Children

While low blood sugar is generally better than high blood sugar, if it drops too low (a condition called hypoglycemia), it can be dangerous. Signs of low blood sugar in children include:

  • Pale or gray skin

  • Moodiness

  • Clumsiness

  • Confusion

  • Feeling shaky or dizzy

  • Headaches

  • Blurred vision

  • Sweating when not active

  • Increased hunger

  • Tingling sensation around the mouth

  • Rapid heartbeat

In severe cases, hypoglycemia can cause your child to pass out or have a seizure. If this happens, seek medical help immediately.

When to Seek Medical Attention

If you notice any of the signs mentioned above and the cause is not apparent (such as skipping a meal before physical activity), it's essential to have your child's pediatrician investigate. Low blood sugar can be caused by certain medications or an underlying condition affecting their metabolism.

By staying vigilant and monitoring your child for signs of high or low blood sugar, you can help ensure their health and well-being. If you have any concerns about your child's blood sugar levels, don't hesitate to contact their pediatrician for guidance and support.

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The Bottom Line

Blood sugar emergencies can escalate rapidly in children, making early recognition of symptoms like excessive thirst, confusion, or sudden behavior changes crucial for preventing serious complications. Keep glucose tablets or juice boxes readily available if your child has diabetes, and establish clear action plans with their healthcare team. If you notice concerning symptoms or need guidance on blood sugar management, Doctronic can provide quick answers and help determine when immediate medical care is needed.

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