Migraine headache and risk of self-harm and suicide: A population-based study in Ontario, Canada.

The aim of this article was to examine the association between migraine headache and self-harm and suicide mortality using population-based health administrative data from Ontario, Canada. Physician diagnosis of migraine headache was found to be prospectively associated with increased risk of deliberate self-harm, but there was no evidence linking it to suicide mortality. Definitively linking migraine to death by suicide may require very large samples. Health care professionals should consider monitoring suicidal risk in individuals with migraine headache.