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Incidence, clinical features and prognosis of Bell's palsy in children

Korean Journal of Pediatrics 2007;50(3):272-276.
Published online March 15, 2007.
Incidence, clinical features and prognosis of Bell's palsy in children
Yoo Jong Won1, Kyung Hee Moon1, Wan Soo Lee1, Seung Woon Keum1, Taek Yu1, Gyung Jae Oh2, Chang Woo Lee1
1Department of Pediatrics, Wonkwang University School of Medicine, Iksan, Korea
2Department of Preventive Medicine, Wonkwang University School of Medicine, Iksan, Korea
소아에서 벨 마비의 발생빈도, 임상적 특징 및 예후에 대한 연구
원유종1, 문경희1, 이완수1, 금승운1, 유승택1, 오경재2, 이창우1
1원광대학교 의과대학 소아과학교실
2원광대학교 의과대학 예방의학교실
Correspondence: 
Chang Woo Lee, Email: chan33@wonkwang.ac.kr
Abstract
Purpose
: Bell's palsy is defined as an idiopathic facial nerve paralysis of sudden onset. In spite of intensive clinical and experimental investigation, there is still uncertainty in the incidence, etiology, and preferred mode of treatment in children. The objective of this study was to analyze clinical outcome and prognosis of children with Bell' palsy.
Methods
: We analyzed 61 cases of Bell's palsy diagnosed at the Department of Wonkwang University Hospital from January 1998 to July 2006. The inclusion criteria were any children with acute isolated unilateral lower motor neuron type of facial nerve palsy. The clinical findings and investigations were reviewed including age, sex, affected site, seasonal incidence and result of steroid treatment. Chi-square and Fisher's exact test was used to compare clinical outcome between duration of complete recovery and age.
Results
: There was no difference in incidence according to sex or age. Incidence was higher in summer and winter. There was no difference in complete recovery rate and duration between steroid treated group and control group. In the group of children younger than 6 years, duration of complete recovery was shorter than older children.
Conclusion
: We found increasing the incidence of Bell's palsy in summer and winter. Children younger than 6 years had shorter duration in complete recovery.
Key Words: Bell's palsy , Steroid , Prognosis


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