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A case of restless legs syndrome in a child presenting with growing pains

Korean Journal of Pediatrics 2008;51(11):1222-1227.
Published online November 15, 2008.
A case of restless legs syndrome in a child presenting with growing pains
Dong Soon Kim1, Hong Beom Shin2, Young Min Ahn1
1Department of Pediatrics, Eulji General Hospital, School of Medicine, Eulji University, Seoul, Korea
2Komoki Sleep Center, Seoul, Korea
성장통으로 발견된 하지 불안 증후군 1예
김동순1, 신흥범2, 안영민1
1을지대학교 의과대학 소아과학교실
2코모키 수면센터
Young Min Ahn, Email: aym3216@eulji.ac.kr
Restless legs syndrome (RLS) is a common neurological sleep disorder in adults characterized by the following diagnostic criteria: an urge to move that is usually associated with unpleasant sensations and symptoms that are worse at rest, relieved by movement, and most severe at night. The definite diagnosis of RLS in children is stricter and consists of self-description of leg discomfort or the presence of 2 of 3 supportive criteria combined with 4 essential criteria for diagnosis in adults. RLS in childhood has often been misdiagnosed as growing pains or a part of normal development. As a result, physicians have often missed the chance for proper management. We diagnosed a case of RLS in a 5-year-old boy presenting with growing pains, whose mother was found to have had RLS since childhood. We confirmed RLS by using a polysomnograph, in which the indices of periodic limb movement syndrome (PLMS) and periodic limb movement during wakefulness (PLMW) were recorded to be compatible with RLS criteria. The patient‘s ferritin level was low normal, and his symptoms improved after taking iron supplements.
Key Words: Restless legs syndrome, Growing pains, Iron deficiency anemia, Ferritin, Polysomnograph

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