Satisfactory results in the treatment of obstructive sleep apnea syndrome (OSAS) depend on precise diagnosis of the site and the severity of obstruction and application of the proper treatment. History-taking including sleep behavior, local and general physical examinations, X-ray examination, fluoroscopy, fiberscopy, polysomnography give us very useful informations for this decision. Among these, polysomnography is the most useful. OSAS is treated conservatively or operatively as indicated

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... to case. Among the conservative treatments, body weight reduction with hypocaloric diet is essential in the obese. Nasal CPAP is widely used and known to be effective, however, its long-lasting use is problematic. Medications of antibiotics and antiallergica are useful for reduction of mucosal swelling caused by inflammatory and allergic reactions. Application of a dental prosthesis protruding the mandible is effective. Among the surgical treatments adenotonsillectomy is mainly performed on the infants and children with OSAS. If OSAS is created by intranasal pathologies, intranasal surgeries of various types are applied, when the causative region exists in the palato-pharynx, UPPP is very effective. Tracheostomy gives an instant relief on heavy obstructive dyspnea. If we encounter such heavily disturbed cases, we should not hesitate to do tracheostomy.