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Journal of Korean Cleft Palate-Craniofacial Association 2011;12(2):125-128.
Correction of Asymmetric Crying Facies with Botulinum Toxin A Injection: A Case Report.
Seong Oh Park, Min Ho Kim, Jung Yoon Song, Ji Ung Park, Byung Min Yun, Tae Hyun Choi, Sukwha Kim
1Department of Plastic and Reconstructive Surgery, Seoul National University College of Medicine, Seoul, Korea. alfbskan@gmail.com
2Department of Plastic and Reconstructive Surgery, Jeju National University College of Medicine, Jeju, Korea.
Asymmetric crying facies is caused by agenesis or hypoplasia of the depressor anguli oris muscle and is often associated various anomalies. Several static and dynamic surgical interventions have been reported, but their effects are unreliable. We report on the successful use of botulinum toxin A in an asymmetric crying facies patient. METHODS: A 4-year-old girl presented with a facial asymmetry on crying or smiling. Physical examination revealed that her face had no asymmetry at rest. However, the patient showed characteristic asymmetry when smiling, crying, and with other normal facial movements. Asymmetric crying facies was clinically suspected and the weakness of left depressor anguli oris was present on electrophysiology study. Fifteen units of botulinum toxin type A were injected to the right depressor anguli oris muscle.
The patient showed the prominent improvement in the facial symmetry without significant complication and the effect persisted until 3 months post injection.
Asymmetric crying facies was treated successfully with botulinum toxin A and this method was easy and noninvasive.
Keywords: Asymmetric crying facies; Depressor anguli oris muscle; Botulinum toxin A


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