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Familial occurrence of cluster headache
M B Russell1, P G Andersson, L L Thomsen
1Department of Neurology, Glostrup Hospital, Unversity of Copenhagen, Denmark.
Journal of Neurology, Neurosurgery, and Psychiatry
|March 1, 1995
Summary
Cluster headache shows a significant familial link, with relatives having a substantially higher risk. This suggests a strong genetic component influences cluster headache development.
Area of Science:
- Neurology
- Genetics
- Epidemiology
Background:
- Cluster headache is a debilitating neurological disorder.
- Familial occurrence data is crucial for understanding its etiology.
- Previous studies suggest a potential genetic predisposition.
Purpose of the Study:
- To investigate the familial occurrence of cluster headache.
- To quantify the risk of cluster headache in relatives of affected individuals.
- To assess the potential genetic contribution to cluster headache.
Main Methods:
- A cohort of 421 cluster headache patients was recruited.
- A mailed questionnaire assessed family history of cluster headache.
- Affected relatives were interviewed by telephone for confirmation.
- Risk was standardized for age and sex compared to the general population.
Main Results:
- Seven patients (2%) were part of three distinct families.
- A positive family history of cluster headache was identified in 7% of families.
- First-degree relatives had a 14-fold increased risk.
- Second-degree relatives had a twofold increased risk of cluster headache.
Conclusions:
- The increased familial risk strongly suggests a genetic basis for cluster headache.
- Genetic factors play a significant role in the etiology of cluster headache.
- Further research into specific genetic markers is warranted.