Causes

• Hyperglycemia occurs when there is too much sugar in the blood. According to Mayo Clinic, the main causes for hyperglycemia in diabetics are the wrong diet, too little insulin, stress whether physical or emotional, or not exercising enough. In non-diabetics, it can also be a cause of your pancreas not distributing enough insulin to your body to regulate your blood sugar levels. Diabetic is defined by the pancreas not distributing insulin as it should.
  
  

Symptoms

• Symptoms of hyperglycemia may be difficult to distinguish from other factors. Some of the symptoms include frequent urination, extreme thirst, fatigue, blurred vision and dizziness. Usually these symptoms appear together. If you are at risk of diabetes or have diabetes, you should either check your blood sugar with a blood glucose monitor if you have one, or have your glucose levels checked by a doctor.
  
  

Effects

• Hyperglycemia can have many negative impacts on your body. According to studies from the University of Virginia, one of the most serious short-term effects is slowed brain function. This can cause slower speech, delayed reactions and low work performance. These usually clear up after your blood sugar levels are brought down to a normal level.
  
  

Complications

• Unfortunately, there are more serious long-term effects than short-term effects when this condition occurs and is prolonged. Some of these include heart disease, kidney failure, eye problems, depression, skin complications, brain damage, coma and diabetic hyperosmolar syndrome. Diabetic hyperosmolar syndrome occurs when the blood sugar is much too high, and can cause extreme dehydration that can be fatal. This can cause a heart attack, kidney damage, coma, and ultimately, death.
  
  

Warning

• According to Med India, a normal blood glucose level is between 70 to 100 mg. Anything higher than 126 is established diabetes. If blood glucose levels rise above 200 mg, you are at risk of serious complications. If your test concludes that the blood levels are above normal range, you should treat the condition with the instructions from your doctor, or contact your doctor immediately. Hyperglycemia can be fatal, whether it is immediate fatality from a coma, or death from the complications that arise due to the prolonged condition.