Sleep disorders Almost half the world's inhabitants are marked various sleep disorders that lead to poor health. Poor quality sleep turns economic cost. Therefore, the efforts of doctors - a sleep directed to treatment of sleep disorders . 1. The most common sleep disorder is insomnia (insomnia) . Under insomnia understand or inability to sleep or frequent awakenings of sleep, which leads to weakness, lethargy, reduced efficiency. 2. Increased sleepiness (hypersomnia) , in contrast to the lack of sleep, is manifested in the form of increased sleepiness during the day, but without the attacks of sleep. Hypersomnia syndrome may be many sleep disorders, mental, neurological and systemic diseases. Daytime sleepiness can be episodic and transient phenomenon in healthy subjects (after exercise, stress, fatigue, etc.), however, is a chronic, recurrent sleepiness interferes with work and study - it is a serious medical problem. 3. Disorder of breathing during sleep • Obstructive sleep apnea (OSA) - a common disease in which the spadenie airway during sleep, stop or sudden respiratory depression - and may develop as a result of various metabolic and cardiovascular disorders. • The syndrome of central sleep apnea (STSAS) - is characterized by frequent nocturnal awakenings. As a result, the patients' and daytime sleepiness. It is shown that STSAS like and OSAS accompanied cardiovascular disorders. SDB central character often detected in patients with congestive heart failure and a variety of neurological disorders (stroke, multisystem atrophy, polyneuropathy). • central alveolar hypoventilation syndrome (Ondine's curse syndrome or) - a condition characterized by a decrease in oxygen saturation during sleep with preservation of mechanical properties of the lung. This condition is rarely diagnosed, since there are frequent apnea, which allows to attribute it to the OSA or STSAS. The main complaints of patients with central alveolar hypoventilation syndrome are frequent awakenings, the feeling of "sleep lack" and headaches in the morning. • congenital central hypoventilation syndrome - the ventilation exacerbated during sleep, observed in the first months of life.These children are often detected other malformations (neuroblastoma, Hirschsprung's disease). With age, there is a gradual "maturation" of chemosensory systems and it is believed that from 4-5 years, such children do not require hospitalization each respiratory infection. • Primary snoring - it is regarded as respiratory failure and is defined as "a condition characterized by loud sounds from the level of the upper airway during sleep." If snoring is available on the background of an upper respiratory tract disease , it is called secondary. Prevalence of "habitual" (almost ezhenochnogo) snoring in women is about 10%, and among men - about 20%. A sleep - is a branch of medicine dealing with the sleep, sleep disorders, studying the impact of sleep disorders on health, as well - their treatment. Who to contact? A sleep - the doctor, provides diagnosis, prevention and treatment of sleep disorders and snoring. Who needs to see a specialist, a sleep? First of all - patients who have trouble falling asleep or sleeping through the night. • Patients with snoring and stopping breathing during sleep; • Patients with insomnia ; • Patients with severe daytime sleepiness; • Patients with sleepwalking, snogovoreniem, night terrors; • Patients with movement disorders associated with sleep; • Patients with hypertension with the highest BP levels at night and in the morning; • Patients with low mood and depression; • Patients with headache associated with sleep; • Patients with epilepsy and epileptic syndromes.