Recurrent limb pain in schoolchildren

Objectives-To determine the prevalence, causes and clinical features of short lasting recurrent limb pain (recurrent limb pain) in children. Design-Population-based study in two stages, with an initial screening questionnaire followed by clinical interviews and physical examination of symptomatic children. Setting-67 primary and secondary schools in the city of Aberdeen. Subjects-2165 children representing a random 10% sample of all schoolchildren aged between 5-15 years. Main outcome measures-(a) The causes of limb pain in children, (b) the prevalence of recurrent Limb pain in schoolchildren, (c) the relationship of recurrent limb pain to childhood migraine. Results-Sports and playground injuries were the most common cause of Limb pain, affecting 9% of all children. The prevalence rate of recurrent Limb pain was 2.6% (95% confidence interval 1.9 to 3.4). Episodes of recurrent Limb pain had similar trigger factors, associated symptoms, and relieving factors to episodes of headache in children with migraine. Conclusions-Recurrent Limb pain is a common cause of Limb pain, with a prevalence rate of 2.6%. The close clinical and epidemiological similarities between recurrent limb pain and childhood migraine suggest a common pathogenesis.