Do you have any of the following symptoms that require emergency treatment? Call 911 or other emergency services immediately.

• Loss of consciousness and inability to rouse the person
• Signs of shock
  • •In adults and older children
  • •In children
• Seizure (convulsion)
• Sudden, severe vertigo with nausea or vomiting and the inability to walk or stand
• Persistent loss of function, such as:
  • •Partial or complete inability to move (paralysis) a part or all of one side of the body (face, arm, and leg), or persistent numbness
  • •Loss of vision in one or both eyes
  • •Confusion or altered behavior, such as unusual aggressive or combative behavior
  • •Inability to speak, difficulty speaking, or difficulty understanding speech
• Sudden, severe headache and is the worst headache you have ever had
• Chest pain that is crushing or squeezing, increases in intensity, or occurs with any other symptoms of a heart attack
• Sudden change in your normal heart rate (pulse rate less than 50 or more than 150 beats per minute). Note: To check your heart rate, see taking a pulse.
• Heart palpitations with any of the following symptoms:
  • •Chest pain
  • •Shortness of breath
  • •Decreased alertness
  • •Vision changes