Diabetes Type I also is known as juvenile diabetes because it typically occurs in children and young adults. The cause is not known, the Mayo Clinic reports, but may be related to heredity. Type I diabetes is caused by the pancreas not secreting the insulin your body requires to break down sugar in the blood. In this condition, the pancreas secretes almost no insulin. Excess amounts of sugar accumulate. There is no cure for diabetes. With proper treatment, you can expect to live a normal healthy life.
Thirst
Needing to urinate frequently as well as wanting to drink an increased amount of fluid occurs in people who have Type I diabetes because of the excess amount of sugar in your body. Your body loses fluids in the tissues because it is attempting to get rid of the excess blood sugar. Since insulin is not present, the energy sugar provides does not get transferred to your body's cells through the blood. Without insulin to move the blood sugar out of the body, your organs and muscles become tired.
Weight
Weight loss may occur even with overeating when the muscles and tissues begin to shrink. This may occur rapidly and can cause a noticeable weight loss. Because sugar is not giving your body the correct amount of energy, you may experience an intense hunger, eat a lot of food and still be hungry. Even if you are eating far more than normal, the food is of little use to sustain your body, which leads to the weight loss.
Body
The lack of a balance between insulin and glucose can cause other symptoms in your body. Because not enough energy is being transferred to your body from what you eat, you may feel extremely tired or fatigued. This imbalance also can lead to moodiness and irritability. Another symptom of Type I diabetes is a numbness or tingling sensation in your extremities, particularly the feet. This condition is called diabetic neuropathy, the Mayo Clinic states. Neuropathy is a form of damage to your nerves that can affect any of your extremities, but diabetic neuropathy tends to affect your feet and legs.
Vision
Blurred vision will occur when the fluids are pulled from the tissues in the body including the eyes. This leaves a difficulty seeing objects and concentrating while working. The lack of sufficient fluid in the eyes makes it difficult for the lens to focus images on your retina.
