Here’s a thorough list of 12 signs that your blood sugar (glucose) may be too high (hyperglycemia). High blood sugar can happen in both type 1 and type 2 diabetes, and recognizing it early is important to prevent complications.
12 Signs Your Blood Sugar Is Too High
1. Frequent urination (polyuria)
- High glucose makes kidneys work harder, causing you to urinate more often.
2. Excessive thirst (polydipsia)
- Fluid loss from frequent urination triggers intense thirst.
3. Increased hunger (polyphagia)
- Cells are starved of glucose, so your body signals you to eat more.
4. Fatigue or weakness
- The body’s cells can’t effectively use glucose for energy.
5. Blurred vision
- High glucose can cause fluid shifts in the eyes, affecting focus.
6. Headaches
- Often mild to moderate, caused by dehydration and glucose fluctuations.
7. Slow-healing cuts and wounds
- High blood sugar impairs circulation and immune function.
8. Frequent infections
- Skin, urinary tract, and yeast infections are more common.
9. Dry mouth and itchy skin
- Dehydration and poor circulation can cause discomfort.
10. Unexplained weight loss
- Seen more in type 1 diabetes; the body breaks down fat and muscle for energy.
11. Tingling, numbness, or pain in hands and feet
- Early sign of diabetic neuropathy due to nerve damage.
12. Nausea or vomiting
- Especially if blood sugar is very high (hyperglycemia can lead to diabetic ketoacidosis in type 1 diabetes).
⚠️ Important Notes
- Persistent high blood sugar can lead to serious complications: kidney damage, nerve damage, vision problems, and heart disease.
- Check your blood sugar if you notice these signs and seek medical advice.
- Severe hyperglycemia can lead to diabetic ketoacidosis (DKA)—symptoms include fruity-smelling breath, rapid breathing, confusion, or vomiting—emergency medical attention is needed.
If you want, I can also make a “quick reference table: high vs low blood sugar signs” so it’s easy to tell the difference at a glance.
Do you want me to do that?
