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A microdeletion in the 15q13.3 locus is an exceedingly rare condition affecting the CHRNA7 gene. There have been 11 pediatric cases of this mutation reported worldwide. Clinical characteristics of the 15q13.3 microdeletion are rapid-onset obesity, hypotonia, autism, seizures, congenital cardiac defects, and neuropsychiatric disorders including impulsive hyperphagia. We describe the case of a four-year-old female with CHRNA7 15q13.3 microdeletion presenting with morbid obesity due to impulsive food-seeking behavior. We have also conducted a literature review on 15q13.3 microdeletion and compared the clinical features with other rapid-onset obesity disorders in the pediatric population. The goal of this case report is to increase awareness concerning CHRNA7 15q13.3 microdeletion as part of the differential diagnosis of rapid-onset obesity associated with neuropsychiatric disorders in pediatrics.

Rapid-Onset Obesity Due to Impulsive Food-Seeking Behavior in a Puerto Rican Child With CHRNA7 15q13.3 Microdeletion