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Type 1 Diabetes: Living With Complications - Symptoms

Your symptoms depend on which complication type 1 diabetes has caused.

Eye disease

There are no symptoms in the early stages of diabetic retinopathy. Symptoms that are noticed in later stages of the disease include:

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  • Blurred or distorted vision or difficulty reading that does not go away. Macular edema or other changes in the retina cause these symptoms. Temporary vision problems can crop up when your blood sugar level is high.
  • Floaters or flashes of light in your field of vision. Retinal detachment or bleeding into the fluid within the eye (vitreous gel) causes these symptoms.
  • Partial or total loss of vision, or a shadow or veil across your field of vision. Retinal detachment or bleeding into the vitreous gel also causes these symptoms.
  • Pain in your eye. Neovascular glaucoma can cause this problem.

For more information, see the topic Diabetic Retinopathy.

Kidney disease

The only sign of diabetic nephropathy in its early stage is tiny amounts of protein in your urine (microalbuminuria). A urine test for protein is the only way to identify this problem. Frothy or foamy urine can be a sign of excess protein. As kidney disease gets worse, you may have:

  • Swelling (edema) in your feet and legs and, if severe, throughout your body.
  • Increasing blood pressure.
  • Large amounts of protein leaking into your urine (macroalbuminuria).
  • High levels of cholesterol and triglycerides in your blood.
  • An increased risk of developing blood clots.

Kidney damage affects your body's ability to rid itself of excess insulin. This results in low blood sugar levels. It also may mean that your doctor may want to adjust your insulin dose. As the disease gets worse, kidney failure develops. You may be tired, lose your appetite, and lose weight.

For more information, see the topic Diabetic Nephropathy.

Heart and large blood vessel disease

You may have chest pain (angina) or leg pain during exercise if you have macrovascular disease. But you may not have any symptoms until you have a heart attack or stroke or develop peripheral arterial disease. Because diabetes can affect the nerves, you may have no pain during a heart attack. This is called a "silent heart attack."1

For more information, see the topics:

  • High Blood Pressure (Hypertension).
  • Coronary Artery Disease.
  • Heart Attack and Unstable Angina.
  • Peripheral Arterial Disease of the Legs.
  • Stroke.

Nerve damage

Symptoms of peripheral neuropathy include:

  • Tingling, numbness, tightness, burning, or shooting or stabbing pain in the feet, hands, or other parts of your body. Usually, symptoms start in the toes and are worse in the evening. Bone and joint deformities can develop, especially of the feet (Charcot foot and/or foot drop).
  • Reduced feeling or numbness, most often in the feet.
  • Reduced sweating, especially in your feet and legs.
  • Greatly reduced or greatly increased sense of pain from a light touch or change in temperature.
  • Weakness and loss of balance and coordination.

WebMD Medical Reference from Healthwise

Last Updated: November 02, 2010
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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If the level is below 70 and you are experiencing symptoms such as shaking, sweating or difficulty thinking, you will need to raise the number immediately. A quick solution is to eat a few pieces of hard candy or 1 tablespoon of sugar or honey. Recheck your numbers again in 15 minutes to see if the number has gone up. If not, repeat the steps above or call your doctor.

People who experience hypoglycemia several times in a week should call their health care provider. It's important to monitor your levels each day so you can make sure your numbers are within the range. If you are pregnant always consult with your health care provider.

Congratulations on taking steps to manage your health.

However, it's important to continue to track your numbers so that you can make lifestyle changes if needed. If you are pregnant always consult with your physician.

Your level is high if this reading was taken before eating. Aim for 70-130 before meals and less than 180 two hours after meals.

Even if your number is high, it's not too late for you to take control of your health and lower your blood sugar.

One of the first steps is to monitor your levels each day. If you are pregnant always consult with your physician.

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