Significance

• The most common symptoms of high blood sugar are the same as the ones experienced by people with diabetes. These symptoms include everything from increased thirst and urination to fatigue and moodiness. However, many people who have high blood sugar experience no symptoms at all, especially at the beginning of the problem.
  
  

Identification

• The three most overlooked symptoms of high blood sugar are fatigue, difficulty to concentrate and moodiness. All three appear because peaks of blood sugar cause the cells (both in your body and in your brain) to starve. Also, peaks of blood sugar are often follow by sudden drops and then new peaks as soon as food is consumed. These ups and downs can alter your perception of the world around you and lead to depression or irritability.
  
  

Warning

• Excesses of glucose cannot be absorbed by the kidneys, which causes them to produce additional urine just so the glucose can be eliminated from the body. This in turn drains water from the body, leading to dehydration and increasing not only the frequency of urination but also your thirst, as your body will require water to replace what's being lost.
  
  

Effects

• People with high blood sugar are often tired and may experience muscle cramps. Glucose is the body's source of energy at a cellular level. If your body cannot process glucose properly and it is accumulating in your blood, rather than making its way to your muscles and organs, your cells will starve, causing fatigue and cramps in the process.
  
  

Features

• Changes in vision are common in people with high blood sugar, as the excess of glucose can In most cases, this manifests as blurred vision, but it can also cause loss of focus, tricking people into believing that they need glasses. In people with extremely high blood sugar, this can mean up to eight weeks after starting treatment or changing diet before the excess glucose has left your bloodstream.