What does this study add?
- Individuals with a pre-accident history of migraine had more frequent and more severe, concussion symptoms than those with no pre-accident migraine history throughout the 12 weeks following injury.
- Individuals with a history of migraine had a higher rate of headache endorsement attributed to their concussion at week 12 than those with no history of migraine.
- Within the migraine subgroups, there was no difference between symptom number, severity or headaches attributed to concussion between those with infrequent migraines or no migraine during the year before the injury.
- Those with a high occurrence of migraine in the year prior had more frequent or more severe concussion symptoms than the other groups and demonstrated a trend towards higher rates of endorsement of headaches attributing to their concussion (statistically insignificant due to the small sample size).