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Attached teaching material: PPT lecture on Electroencephalography (EEG), polysomnography (PSG) and sleep disorders. The aim of the lecture is to describe the basic principles of electroencephalography, the examination procedure, indications for EEG examination and basic interpretations of the EEG recording. The lecture also discusses the principle and indications and interpretation of the results of the polysomnographic examination. The last part of the lecture is devoted to sleep disorders - their classification, diagnosis (polysomnography, MSLT) and treatment.

Obstructive sleep apnoea (OSA) is characterized by repetitive episodes of interruption of breathing during sleep due to partial or complete collapse of pharynx. Prevalence of mild OSA is about 9-24%, clinically significant disease is present in about 4% men and 2% women. Morphology of upper airways and body weight are important factors for development of OSA. Approximately 70% of OSA patients are overweight and 40% obese patients suffer from OSA.

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Obstructive sleep apnoea (OSA) is a highly prevalent sleep disorder that affects 2% of female and 4% of male population. The major risk factors for OSA is obesity. Less common causes of OSA may be various congenital craniofacial anomalies. The presented case report has introduced an adult male patient with Crouzon syndrome (CS), rare genetic disease leading to craniofacial deformities, who was referred to sleep laboratory with the suspicion of sleep disordered breathing.

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Substance-induced disorders include medical conditions that can be directly attributed to the use of a substance. These conditions include intoxication, withdrawal, substance-induced delirium, substance-induced psychosis, and substance-induced mood disorders. Common eating disorders include anorexia nervosa, bulimia nervosa, binge-eating disorder, and avoidant restrictive food intake disorder.