Diabetic Symptoms in Adults

Adult-onset diabetes is also called "type-2 diabetes," which occurs when the body's cells resist the insulin the body produces. This is a condition sometimes called "insulin resistance." When this happens, the body does not get the glucose needed for proper function, resulting in the signs and symptoms listed here.

Thirst

• Extraordinary thirst--the need to drink a large amount of liquid without ever completely quenching this thirst--is a symptom of type-2 diabetes.

Frequent Urination

• Along with increased fluid intake is frequent urination. Both symptoms occur because the body is trying to rid itself of excess glucose in the blood that can't get into the cells. Without the proper amount of and response to insulin, the kidneys cannot filter the glucose; instead, they send it back into the bloodstream.

Tiredness

• Feeling tired and nearly lethargic, especially after a high-carbohydrate meal, is a common symptom of type-2 diabetes. Because the glucose can't get into the cells, the body can't use it for energy.

Tingling Extremities

• Legs, feet and arms may tingle or feel numb. When blood sugar remains too high for a long time, neuropathy (nerve damage) may set in.

Blurred Vision

• Changes in vision--especially blurriness--may occur, as well as dryness in the eyes.

Cuts That Heal Slowly or Not at All

• High blood glucose levels keep the body from healing normally.