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Childhood headaches: discrete entities or continuum?
V Viswanathan1, S J Bridges, W Whitehouse
1Children's Hospital, Dublin, Republic of Ireland.
Insights
This study found that the World Federation of Neurology definition of migraine is not suitable for children experiencing recurrent headaches. Cluster analysis revealed no distinct groups matching this definition, supporting a continuum theory of headache syndromes.
Area of Science:
- Pediatric Neurology
- Headache Medicine
Background:
- Recurrent headaches are common in children.
- Existing diagnostic criteria for migraine may not adequately capture pediatric headache presentations.
Purpose of the Study:
- To investigate signs and symptoms of recurrent headaches in children.
- To determine if distinct pediatric headache groups align with the World Federation of Neurology (1969) migraine definition.
Main Methods:
- Interviewed 150 children from neurology clinics using a standardized questionnaire.
- Applied cluster analysis to identify headache symptom groups.
- Conducted comparative analysis of identified groups.
Main Results:
- No stable groups matching the World Federation of Neurology migraine definition were identified.
- Cluster analysis yielded three groups, none aligning with the International Headache Society classification.
- Identified groups were not stable or predictive of prognosis.
Conclusions:
- The World Federation of Neurology (1969) definition appears inappropriate for this pediatric sample.
- Findings support the continuum theory of headache syndromes in children.
- Further research is needed to refine pediatric headache classification.
Abstract:
The aims of this study were to investigate the signs and symptoms of recurrent headaches in children and to identify if there are any discrete groups of children whose headaches corresponded to the World Federation of Neurology (1969) definition of migraine. One-hundred and fifty children recruited from the neurology clinics at Royal Manchester, Booth Hall, and Birmingham Children's Hospitals were interviewed to complete a standardized questionnaire. The data were examined using cluster analysis followed by comparative analysis of the headache signs and symptoms in the different groups identified. No stable groups were identified (i.e., no group was reliably identified by different methods of cluster analysis) which corresponded to the World Federation of Neurology definition of migraine. This would suggest that this definition is not appropriate for the sample investigated. Three groups of children evolved after cluster analysis. None of these groups was in agreement with the International Headache Society classification of headaches. The groups were neither 'stable' clusters nor 'useful' in predicting prognosis. This outcome supports the continuum theory of headache syndromes.