Cognitive Changes

• More often than not, a person suffering a diabetic attack will begin to manifest some peculiar behaviors, often revolving around cognition. This may present itself as confusion, making odd statements or performing unusual movements.
  
  

Sweating

• Many people who are suffering from a diabetic reaction will also begin to sweat quite profusely. This will usually not be linked to any sort of physical activity.
  
  

The Shakes

• If you think about times when you've had little to no food, you've probably gotten the shakes. The same will happen with someone who is experiencing a diabetic attack, but it will generally be more pronounced.
  
  

Vision Changes

• Another common symptom of a diabetic attack is a change in visual perception, usually prompting some blurry, fuzzy or double vision.
  
  

Unconsciousness

• Though rare, some people will have such a low blood sugar that they may lose consciousness. Sometimes they may even have a seizure.