Frequent urination, increased thirst, blurry vision, fatigue, and unexplained weight changes can be signs of high blood sugar.
What to notice
Symptoms matter, but absence of symptoms does not rule out diabetes. Testing is the only way to know for sure.
What patients can do
- Keep a current medication list and bring it to clinic visits
- Ask what glucose targets are appropriate for your age, diabetes type, pregnancy status, and other medical conditions
- Learn how food, activity, sleep, illness, stress, and medications affect your glucose pattern
- Plan ahead for low blood sugar, high blood sugar, sick days, travel, and follow-up appointments
When to seek medical advice
Contact your healthcare team if glucose readings are repeatedly outside your target range, if you have medication side effects, if you are planning pregnancy, or if diabetes care feels too difficult to manage alone.
Seek urgent care for chest pain, stroke symptoms, severe dehydration, confusion, repeated vomiting, severe low blood sugar, ketones with high glucose if you were told to check ketones, or a foot wound with spreading redness, drainage, fever, or black tissue.
Sources consulted
- CDC Diabetes Basics: https://www.cdc.gov/diabetes/about/index.html
- CDC Diabetes Testing: https://www.cdc.gov/diabetes/diabetes-testing/index.html
- CDC Manage Blood Sugar: https://www.cdc.gov/diabetes/treatment/index.html
- CDC Living with Diabetes: https://www.cdc.gov/diabetes/living-with/index.html
- NIDDK Diabetes Overview: https://www.niddk.nih.gov/health-information/diabetes/overview
- American Diabetes Association About Diabetes: https://diabetes.org/about-diabetes
Educational use only. This page does not replace individualized medical advice, diagnosis, or treatment. Diabetes medications and insulin doses should be changed only with guidance from a licensed clinician.