WHAT IS MIGRAINE:
Attack lasting 4-72 hours, average 12 to 48 hours
At least 2 of the following:
Unilateral head pain [unilateral pain] 
Throbbing or pulsating quality 
Moderate to severe pain affecting ability to function 
Worsening of pain with routine activity 
At least one of the following:
Nausea and/or vomiting
Sensitivity to light and sound