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A 3-year-old girl with a history of excessive weight gain from birth presented with obesity, somnolence, and cyanosis, characteristic of the Pickwickian syndrome. Obesity was familial and exogenous without endocrine or neurologic anomaly. Respiratory center sensitivity to carbon dioxide was normal. Excessive somnolence was due to the obesity, which during sleep caused airway obstruction, apnea, and awakening, finally resulting in sleep deprivation. The sleep apneas and the daytime somnolence disappeared with weight reduction, showing that obesity alone had been responsible for the disorder.
Simpser et al. (Thu,) studied this question.