Introduction: The association between Sleep Obstructive Apnea Syndrome (SOAS) and the obesity has been highly studied. The SOAS is characterized by the repetitive obstruction of the upper airways during the sleep, many times accompanied by snores, oxygen desaturation, sleep fragmentation and excessive daytime somnolence (EDS). Type of Study: Prospective Transversal. Objective: To analyze the results of the Berlin Questionnaire (BQ) and the Epworth Somnolence Scale (ESS) completed by the patients interned in the Spa Med Campus Sorocaba, attempting to find who has daytime somnolence and high risk for SOAS. Method: The patients completed the Berlin Questionnaire and the ESS voluntarily. The study was of transversal type with analysis of the questionnaires completed during the year of 2008. Results: We obtained a total of 276 patients with a total of 183 women and 93 men. The prevalence of obese patients was of 111 patients (40.2%). In the positive BQ group, we obtained a total of 84 patients; 34 male; as to the positive ESS group, we found a total of 67 patients, 24 male. Conclusion: The ESS and the BQ have been useful currently for selection of the sleep disorders and may serve as a possible indicator for polysonography. The questionnaires' results show us the high prevalence of individuals interned in SPA with the risk of having SOAS, specially the obese ones