Prediabetes doesn't usually have any signs or symptoms. One possible sign of prediabetes is darkened skin on certain parts of the body. Affected areas can include the neck, armpits and groin. Classic signs and symptoms that suggest you've moved from prediabetes to type 2 diabetes include: 
Increased thirst
Frequent urination
Increased hunger
Fatigue
Blurred vision
Numbness or tingling in the feet or hands
Frequent infections
Slow-healing sores
Unintended weight loss
