High Blood Sugar Warning Signs
High blood sugar, also known as hyperglycemia, occurs when there is too much glucose in the bloodstream. It is most common in people with diabetes, but it can also develop in others due to stress, illness, poor diet, or certain medications.
Recognizing the warning signs early can help prevent serious complications.
Early Warning Signs
1. Frequent Urination
When blood sugar levels are high, the kidneys work harder to remove excess glucose, leading to more frequent trips to the bathroom — especially at night.
2. Increased Thirst
Because the body loses more fluids through urination, you may feel unusually thirsty even if you’re drinking regularly.
3. Extreme Hunger
Despite eating normally, you may feel constantly hungry. This happens because your body isn’t properly using glucose for energy.
4. Fatigue
High blood sugar prevents cells from getting the energy they need, leading to persistent tiredness or weakness.
5. Blurred Vision
Excess sugar in the blood can cause swelling in the lenses of the eyes, temporarily affecting vision.
6. Headaches
Frequent or unexplained headaches can sometimes be linked to elevated blood sugar levels.
7. Dry Mouth and Skin
Dehydration from frequent urination can lead to dry skin and a dry, sticky feeling in the mouth.
More Serious Symptoms
If blood sugar remains high for a prolonged period, more severe symptoms may develop:
• Nausea and vomiting
• Shortness of breath
• Fruity-smelling breath
• Confusion
• Rapid heartbeat
These may signal a medical emergency such as diabetic ketoacidosis (DKA), especially in people with type 1 diabetes.
Who Is at Risk?