Clinical complications associated with diabetes may include the following:
Cardiovascular disease. Cardiovascular disease, in many cases, is caused by atherosclerosis — an excess buildup of plaque on the inner wall of a blood vessel that restricts the flow of blood. Heart attack and stroke are 2 to 4 times more common in people with diabetes. In addition to high glucose, the other risk factors for cardiovascular disease that can be improved include smoking, high blood pressure, diabetic kidney disease, and high cholesterol.
Hypertension. High blood pressure affects as many as 2 out of 3 people who have diabetes. It dramatically increases the risk of diabetes-related complications, like heart attack, stroke, renal failure, and blindness.
Dental disease. Periodontal (gum) disease occurs with greater frequency in people with diabetes.
Retinopathy or glaucoma (eye disease or blindness). Diabetes is the leading cause of new cases of blindness among adults between ages 20 and 74. In addition to high glucose, the other risk factors for blindness from diabetes that can be improved include smoking, high blood pressure, and diabetic kidney disease.
Renal disease (kidney/urinary tract disease). Diabetes is the leading cause of end-stage renal disease (ESRD), a condition in which the patient requires dialysis or a kidney transplant in order to live. In addition to high glucose, the other risk factors for kidney failure from diabetes that can be improved include smoking, high blood pressure, and the use of certain medications (like pain pills).
Neuropathy (nerve disease). Approximately two-thirds of people with diabetes have mild to severe forms of diabetic nerve damage. This can cause disabling pain requiring medicines. Severe forms of diabetic nerve disease are the major contributing cause of lower-extremity amputations.
Amputation. More than 60% of nontraumatic lower-limb amputations in the U.S. occur among people with diabetes. In addition to high glucose, the other risk factors that increase the risk of amputation and can be improved include smoking, high blood pressure, diabetic kidney disease, high cholesterol, and injuries to the feet.
Diabetic ketoacidosis (DKA). DKA is one of the most serious outcomes of poorly controlled diabetes, and primarily occurs in people with type 1 diabetes. DKA is marked by high blood glucose levels along with ketones in the urine.
People with diabetes must stay alert for symptoms that can lead to clinical complications. The best way to do this is to:
Get regular checkups (finding problems early is the best way to keep complications from becoming serious)
Keep appointments with your doctor, even when you are feeling well
Be aware of symptoms and warning signs (signs such as vision problems [blurriness, spots], fatigue, pale skin color, obesity [more than 20 pounds overweight], numbness or tingling feelings in hands or feet, repeated infections or slow healing of wounds, chest pain, vaginal itching, or constant headaches)
Carefully self-monitor blood sugar levels several times a day, as directed by your doctor
Eat a healthy, well-balanced diet
Get regular exercise
Check your feet every day for even minor cuts or blisters
Taking appropriate medicines for good blood pressure and cholesterol control