Research Reports - Headaches in patients with previous head injuries
Cephalalgia. 2015 Dec 2. pii: 0333102415618948. [Epub ahead of print]
Hoem Nordhaug L(1), Vik A(2), Hagen K(3), Stovner LJ(3), Pedersen T(4), Gravdahl
GB(5), Linde M(3).
BACKGROUND: Headache attributed to head injury is claimed to be among the most
common secondary headache disorders, yet available epidemiological evidence is
scarce. We evaluated the prevalence of headache among individuals previously
exposed to head injury by a comparison to an uninjured control group.
METHODS: This population-based historical cohort study used data from hospital
records on previous exposure to head injury linked to a large epidemiological
survey with data on headache occurrence. Participants without head injury,
according to hospital records, were used as controls. The head injuries were
classified according to the Head Injury Severity Scale (HISS) and the
International Classification of Headache Disorders (ICHD-3 beta). Binary logistic
regression was performed to investigate the association between headache and head
injury, controlling for potential confounders.
RESULTS: The exposed group consisted of 940 individuals and the control group of
38,751 individuals. In the multivariate analyses, adjusting for age, sex,
anxiety, depression and socioeconomic status, there were significant associations
between mild head injury and any headache, migraine, chronic daily headache and
medication overuse headache.
CONCLUSION: Headache was more likely among individuals previously referred to a
hospital for a mild head injury compared to uninjured controls.