The earliest signs and symptoms of diabetes are increased thirst, constant hunger and frequent urination.
Signs and symptoms of diabetes type 1 include:
The smell of acetone on the patient's breath, any altered state of
consciousness or arousal or Kussmaul breathing (a rapid, deep breathing) are dangerous signs of diabetic ketoacidosis.
Signs and symptoms of diabetes type 2 include:
Complications may develop in many people with diabetes especially if early signs and symptoms of diabetes are not recognized or it is not controlled well. So it is sometimes seen that many people first become aware that they have diabetes (acts as a silent killer) when they develop one of its life-threatening complications.