Genetic Link Found Between Migraine Predisposition and Post-Concussion Headaches in Children

A University of Calgary-led study has found that children with a genetic predisposition to migraine are at a higher risk of experiencing more severe headaches following a concussion. The research, which followed over 600 children for six months post-injury, is described as the first to examine specific genetic factors for migraine in relation to post-concussion outcomes. The findings were published in the journal Neurology Genetics.

Study Details and Findings

The research team examined 610 children aged 8 to 16 who presented with concussion symptoms at emergency departments in Canada. Participants were followed for six months after their injuries.

Researchers analyzed migraine genetics using three methods:

• Family history reporting
• Polygenic risk scores
• Analysis of specific genetic mutations

The study found that a family history of migraine and mutations in four specific genes were associated with a higher risk of headaches of increasing severity after a concussion.

Research Context and Significance

The study is noted as the first to examine specific genetic factors for migraine in relation to post-concussion outcomes. Migraine is identified as the leading cause of disability associated with neurological disorders in children, adolescents, and into early and mid-adulthood.

Researchers noted that post-concussion symptoms beyond headache, including blurred vision, balance issues, and dizziness, may be related to migraine. Post-concussion headache can impact daily life, including school performance and social participation.

Researcher Statements

• Dr. Keith Yeates, a principal investigator, stated there is increasing interest in the genetics of headache to help identify individuals at risk. He noted that understanding the biological systems governed by these genes could help identify who will respond to which medications and aid in developing new treatments.
• Dr. Serena Orr, the first author, said the findings suggest having migraine genes might increase the risk of more headaches after concussion, which is associated with worse long-term outcomes.

Potential Implications and Future Research

The researchers indicated the information could be important for treatment providers, as patients with a genetic predisposition may require more monitoring or earlier, more targeted headache treatment. They noted potential implications for selecting which pain medication could be most beneficial.

The researchers suggested that in the future, rapid genetic testing could identify individuals susceptible to post-concussion headaches, potentially enabling personalized treatments.

The next step for researchers will be to replicate the study and its results in other populations, including adults.