How is migraine diagnosed?
Your doctor can diagnose migraines by the symptoms you describe. Your doctor will perform a physical exam. Your doctor may also want to do blood tests or imaging tests, such as an MRI or CAT scan of the brain, to be sure that there are no other causes for the headache. You may also be asked to keep a "headache diary" to help your doctor identify the things that might cause your migraines.
Source
Headaches in Children and Adolescents by DW Lewis, M.D. (American Family Physician February 15, 2002, http://www.aafp.org/afp/20020215/625.html)
Written by familydoctor.org editorial staff
Reviewed/Updated: 09/10
Created: 01/96