Symptoms of High Blood Sugar You Shouldn't Ignore (Hyperglycemia)
High blood sugar, also known as hyperglycemia, is a condition where there is an excessive amount of glucose circulating in the blood. It's a common concern, particularly for individuals with diabetes, but can also occur in those without a diagnosed condition. Recognizing the early symptoms of hyperglycemia is crucial for prompt management and prevention of long-term health complications. This article will delve into the various symptoms, their underlying causes, and the importance of addressing them proactively.
What is Hyperglycemia and Why Does it Happen?
Hyperglycemia develops when your body either doesn't produce enough insulin (Type 1 diabetes), or your cells become resistant to the insulin that is produced (Type 2 diabetes). Insulin is a hormone that helps glucose from food get into your cells to be used for energy. Without enough insulin, or if cells don't respond to insulin, glucose builds up in the bloodstream. Other factors besides diabetes can also cause high blood sugar including stress, illness, certain medications, and even dehydration. Recognizing potential risk factors is key to managing and mitigating the occurrence of hyperglycemia.
Common Symptoms of High Blood Sugar
The symptoms of high blood sugar can vary from mild to severe, depending on how elevated your blood glucose levels are and for how long. Here’s a breakdown of the symptoms you should be aware of:
- Frequent Urination (Polyuria): When blood sugar is high, the kidneys try to flush out the excess glucose through urine, leading to increased urination, especially at night.
- Increased Thirst (Polydipsia): The increased urination leads to dehydration, triggering excessive thirst.
- Blurred Vision: High glucose levels can affect the lens of the eye, causing temporary blurred vision.
- Fatigue: Without sufficient insulin to move glucose into cells for energy, you may experience unexplained fatigue and weakness.
- Slow-Healing Sores or Cuts: High blood sugar can impair blood flow and nerve function, slowing down the body's natural healing processes.
- Dry, Itchy Skin: Dehydration from frequent urination can lead to dry and itchy skin.
- Recurring Infections: Elevated glucose levels can create a favorable environment for bacterial and fungal growth, increasing the risk of infections, particularly urinary tract infections and yeast infections.
More Severe Symptoms of Hyperglycemia
If hyperglycemia goes untreated for an extended period, more severe symptoms can develop. These symptoms require immediate medical attention:
- Nausea and Vomiting: Prolonged high blood sugar can disrupt the digestive system, leading to nausea and vomiting.
- Shortness of Breath: In severe cases, hyperglycemia can lead to diabetic ketoacidosis (DKA), a life-threatening condition characterized by the production of ketones, which can cause shortness of breath.
- Stomach Pain: Abdominal pain can accompany nausea and vomiting in severe hyperglycemia or DKA.
- Fruity-Scented Breath: DKA can cause a distinctive fruity odor on the breath, a sign of the body trying to eliminate ketones.
- Confusion or Difficulty Concentrating: Very high blood sugar levels can impair brain function, leading to confusion and difficulty focusing.
- Coma: In the most severe cases, untreated hyperglycemia can lead to coma.
How to Check Your Blood Sugar
Regularly monitoring your blood sugar is crucial, especially if you are at risk or have been diagnosed with diabetes. The most common method involves using a blood glucose meter. Here's how it works:
- Wash your hands thoroughly.
- Insert a test strip into the meter.
- Use a lancing device to prick your finger.
- Gently squeeze your finger to obtain a small drop of blood.
- Touch the test strip to the drop of blood.
- Wait for the meter to display your blood sugar level.
Your doctor can advise you on the appropriate target range for your blood sugar levels. It’s also important to understand A1C tests and what they mean for your overall blood sugar control over a longer period.

When to Seek Medical Attention
It's essential to seek immediate medical attention if you experience any of the severe symptoms of hyperglycemia, such as nausea, vomiting, shortness of breath, or confusion. If you have diabetes, contact your healthcare provider if your blood sugar levels are consistently above your target range, or if you are experiencing any of the other symptoms mentioned above. For those without diagnosed diabetes, persistent symptoms warrant a visit to the doctor to determine the underlying cause and receive appropriate management.
Managing and Preventing Hyperglycemia
Effective management and prevention of hyperglycemia involves several lifestyle and medical interventions:
- Diet: Follow a healthy, balanced diet that is low in sugar and carbohydrates. Focus on whole grains, lean proteins, and plenty of fruits and vegetables.
- Exercise: Engage in regular physical activity to help improve insulin sensitivity and lower blood sugar levels.
- Medication: If you have diabetes, take your prescribed medications as directed by your healthcare provider.
- Monitoring: Regularly monitor your blood sugar levels and work with your healthcare provider to adjust your treatment plan as needed.
- Hydration: Stay well-hydrated by drinking plenty of water throughout the day.
- Stress Management: Implement stress-reducing techniques, such as meditation or yoga, to help manage blood sugar levels.
The Importance of Proactive Management
Ignoring the symptoms of high blood sugar can lead to serious and long-term health complications, including:
- Diabetic Ketoacidosis (DKA): A life-threatening condition that occurs when the body produces high levels of ketones.
- Hyperosmolar Hyperglycemic State (HHS): Another severe condition characterized by extremely high blood sugar levels and dehydration.
- Cardiovascular Disease: High blood sugar can damage blood vessels and increase the risk of heart disease and stroke.
- Nerve Damage (Neuropathy): High blood sugar can damage nerves, leading to numbness, tingling, and pain, especially in the hands and feet.
- Kidney Damage (Nephropathy): High blood sugar can damage the kidneys, potentially leading to kidney failure.
- Eye Damage (Retinopathy): High blood sugar can damage the blood vessels in the retina, leading to vision loss.
Symptom | Possible Cause | Action to Take |
---|---|---|
Frequent Urination | Body trying to flush out excess glucose | Check blood sugar, hydrate, consult doctor if persistent |
Increased Thirst | Dehydration from frequent urination | Drink plenty of water, monitor blood sugar |
Blurred Vision | Effect of high glucose on the eye lens | Check blood sugar, consult eye doctor if persistent |
Nausea/Vomiting | Body reacting to very **high blood sugar** or DKA | Seek immediate medical attention |
Conclusion
Recognizing and addressing the symptoms of high blood sugar promptly is paramount for preventing long-term health complications. By understanding the symptoms, monitoring your blood sugar levels, and adopting healthy lifestyle habits, you can effectively manage and prevent hyperglycemia, ultimately improving your overall health and well-being. Remember to consult your healthcare provider for personalized advice and treatment options. Early detection and proactive management are key to living a healthy life, even with diabetes.