Here are 14 common symptoms that may indicate very high blood sugar (hyperglycemia). If you or someone you know is experiencing several of these, it’s important to check blood sugar and seek medical advice, especially if symptoms are severe or sudden.
🚨 14 Symptoms of Very High Blood Sugar
1. Frequent urination
Your body tries to get rid of excess sugar through urine.
2. Extreme thirst
Dehydration from frequent urination causes intense thirst.
3. Dry mouth
A common sign of dehydration.
4. Fatigue
High glucose levels can make you feel tired and weak.
5. Blurred vision
High blood sugar can change fluid levels in the eyes, affecting focus.
6. Headaches
Often linked to dehydration and glucose imbalance.
7. Unexplained weight loss
Your body breaks down fat and muscle for energy when it can’t use glucose properly.
8. Slow-healing cuts or infections
High sugar weakens immune response and healing.
9. Recurrent infections
Especially yeast infections or urinary tract infections.
10. Nausea or vomiting
Common with very high blood sugar or diabetic ketoacidosis.
11. Stomach pain
May occur with high glucose or ketoacidosis.
12. Shortness of breath
Can be a sign of diabetic ketoacidosis, especially if combined with other symptoms.
13. Fruity-smelling breath
A classic sign of ketoacidosis.
14. Confusion or difficulty concentrating
High glucose can affect brain function, especially if very high.
⚠️ When to Seek Emergency Care
If you have very high blood sugar + any of the following, get emergency help:
- Vomiting
- Severe abdominal pain
- Confusion
- Trouble breathing
- Fruity breath
- Rapid heartbeat
These can be signs of diabetic ketoacidosis (DKA), which is a medical emergency.
If you want, I can also:
✅ explain what blood sugar levels are considered “very high”
✅ share what to do right now if you’re experiencing symptoms
✅ give tips to help manage blood sugar safely
Just tell me what you’d like.