headache AE migraine AE migraine headache YH HPO: HP_0002076 According to the Vaccine Adverse Event Reporting System (VAERS), 'migraine'; is an adverse event that was mentioned in 267 VAERS reports (0.2%) during1991-2001 (Reference: PMID: 12825543). a headache AE that has an outcome of migraine SIDER: C0149931 A migraine is a very painful type of headache. People who get migraines often describe the pain as pulsing or throbbing in one area of the head. During migraines, people are very sensitive to light and sound. They may also become nauseated and vomit.