Recognize the signs of hypoglycemia

Low blood sugar can happen suddenly. 
Recognize low blood sugar early and take action. 


It’s important that you notice when your blood sugar gets too low. Low blood sugar is something that people living with diabetes need to be prepared to treat. Less severe cases of hypoglycemia should be treated right away by eating sugar or a sugar-sweetened product such as a regular soft drink or fruit juice.

You might get low blood sugar if you:

  • Take certain medicines or eat too few carbohydrates (starches) or skip or delay a meal
  • Take too much medicine (ask your diabetes care team if this applies to you)
  • Are more physically active than usual

Nonsevere Hypoglycemia

To help with low blood sugar, it is generally recommended that you:

  • Test your blood sugar even if you only feel a little dizzy or have other symptoms
  • Carry low blood sugar treatments with you, like glucose tablets
  • Call your health care provider if your blood sugar is less than 70 mg/dL more than once a week

Early symptoms of hypoglycemia may include:

  • sweating 
  • drowsiness 
  • dizziness 
  • sleep disturbances 
  • irregular heartbeat (palpitation)
  • anxiety
  • tremor 
  • blurred vision 
  • hunger
  • slurred speech  
  • depressed mood  
  • tingling in the hands, feet, lips, or tongue 
  • irritability 
  • abnormal behavior 
  • lightheadedness 
  • unsteady movement 
  • inability to concentrate 
  • personality changes 
  • headache 
  • restlessness 
  • depressed mood  
  • tingling in the hands, feet, lips, or tongue 
  • irritability 
  • abnormal behavior 
  • lightheadedness 
  • unsteady movement 
  • inability to concentrate 
  • personality changes 
  • headache 
  • restlessness 
  • depressed mood  
  • depressed mood  
  • tingling in the hands, feet, lips, or tongue 
  • irritability 
  • abnormal behavior 
  • lightheadedness 
  • unsteady movement 
  • inability to concentrate 
  • personality changes 
  • headache 
  • restlessness 
  • depressed mood  

Severe Hypoglycemia

If not treated early, hypoglycemia may worsen and the person may have severe hypoglycemia. Signs of severe hypoglycemia include:

  • confusion 
  • unconsciousness 
  • seizures
  • death