What are the symptoms of high blood glucose?

Symptoms of high blood glucose


This is a very common question. Symptoms of high blood glucose (hyperglycemia) depend on the levels of blood glucose levels. Most people will feel the symptoms if their blood glucose is persistently above 11 mmol/L or 200mg/dl (blood glucose high for some time).

  1. Unexplained excessively thirsty. A person usually has constant dry mouth despite drinking fluids repeatedly.
  2. Going to the toilet frequently to urinate.
  3. Unexplained weight loss or gain
  4. Constantly feeling hungry
  5. Feeling excessively tired
  6. Blurred vision
  7. It takes longer for wounds and cuts to heal
  8. Developing yeast infection in the genital area leading to excessive itching.
  9. Sexual dysfunction like impotence


Most people in the early stages of type 2 diabetes do not feel any symptoms. Therefore, it is essential to know about the personal risk factor for type 2 diabetes (Read about risk factors of diabetes). A person should contact a healthcare professional for advice if risk factors of type 2 diabetes are present. A person should be tested for diabetes.

People with type 1 diabetes usually have symptoms at the time of diagnosis. Therefore, if these symptoms are present, then it is essential to seek medical advice urgently.  

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