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The objective of this study was to study the prevalence, characteristics and predisposing factors of tension-type headache in children. An unselected population-based questionnaire study was carried out in 1409 Finnish schoolchildren aged 12 years. Of them, 1135 (81%) returned an acceptably completed questionnaire. The prevalence of episodic tension-type headache in children was 12% (138 of 1135). Children with episodic tension-type headache also often reported characteristics of pain typical for migraine. Children with frequent and persistent episodic tension-type headache reported stabbing and severe occipital pain, phonophobia and abdominal pain significantly more often than children with infrequent episodic tension-type headache. Neck-shoulder symptoms, symptoms of depression and oromandibular dysfunction were each independently associated with episodic tension-type headache. The father's occupation of a lower-level white-collar worker put the child at a four-fold risk for episodic tension-type headache. We conclude that episodic tension-type headache is as common as migraine in children. It can be associated with depression, oromandibular dysfunction and muscular stress. Especially children with frequent and persistent episodic tension-type headache report characteristics of pain typical for migraine.

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The results show the complexity of pathways in psychopathology from early childhood to preadolescence. In particular, aggressive and destructive behaviors in very early childhood predict later problems and necessitate early recognition and possible intervention at an early age. An instrument like the CBCL 2-3 is valuable in the early detection of children at risk of long-term problems.

In addition to somatic factors, it is important to consider the child's pain sensitivity, reaction to various stress situations, and family functioning when studying childhood headache. The child's coping mechanisms can be supported by information given by the parents. School entry can be considered a suitable period for careful investigation into possible occurrence of headache and also for giving information about headache and its management.

Headache classification in children may be improved by palpation of occipital muscle insertions and temporomandibular joint areas, and by discerning a history of triggering events and concurrent symptoms.

To study the main predictors of childhood preschool headache, 1443 families expecting their first child were followed from the onset of pregnancy to the child's sixth year of life. Subject selection was based on stratified randomized cluster sampling. Of the children, 14.9% (144) suffered from headache disturbing daily activities at the age of 6 years. The mother's assessment of the infant's poor health (OR 2.5, 95% CI 1.1 to 5.8) and feeding problems (OR 1.9, 95% CI 1.1 to 3.2) at the age of 9 months predicted later occurrence of headache. At 3 years, depression and sleeping difficulties (according to Achenbach's psychological test) and recurrent difficulties in falling asleep (OR 3.2, 95% CI 1.5 to 7.2) were strong predictors. Headache in other family members (OR 3.5, 95% CI 2.0 to 5.9), especially in the mother (OR 1.7, 95% CI 1.2 to 2.4), predicted preschool headache in a child. At the age of 5 years, travel sickness (OR 2.8, 95% CI 1.5 to 5.1), nocturnal enuresis (OR 1.8, 95% CI 1.1 to 3.0), and the presence of long-term disease (OR 1.8, 95% CI 1.1 to 3.0) were strong predictors of later headache. At the same age, concentration difficulties (OR 2.3, 95% CI 1.3 to 4.2), behavioral problems (OR 2.7, 95% CI 1.1 to 6.4), unusual tiredness (OR 3.8, 95% CI 1.0 to 13.5), and, conversely, high sociability (OR 1.5, 95% CI 1.0 to 2.2) predicted headache. The three last-mentioned psychological factors seemed to be associated with concentration difficulties at the age of 5, which was found to be the strongest predictor. The parents of child headache sufferers often became aware of the child's problems long before the emergence of headache.