Sleeps lasts one-third of our life. Sleep is periodic and necessary state for maintaining vital activity of the organism, which characterized by decrease of level of wakeful state and termination or significant weakening of bonds with surrounding world. Sleep is a complex neurophysiologic phenomenon, in its realization the majority of morphologic and mediatory brain structures is involved. General length of sleep is strictly individual, has great variety and makes up 6-9 hours on average. Along with it, for some healthy individuals sleep lasting more or less hours presents physiologic norm.
Sleeplessness is often complaint and manifested both in shortening of normal sleep period, and in worsening of its qualitative characteristics (complaints on poor sleep, insufficient sleep, sleepiness, tiredness in the morning after sleep, poor physical and mental ability to work). Conventionally sleep disorders are divided into three types: difficulties on falling asleep, often awakenings and early awakening. According to cause factors it is necessary to differentiate habitual sleeplessness, functional, secondary and that of being a component part of different neuro-psychic diseases.
Before administration of hypnotic agents it is necessary to establish cause of sleeplessness and try to eliminate it. Psycho-therapeutic support is of great importance, patient should be given a number of simple recommendations as for observance of sleep hygiene, non-medicinal treatment methods must be used. In the majority of cases all-mentioned above are enough. Along with it, drug therapy of sleep disorders should be predominantly of auxiliary character, and be strictly limited in time, as prolonged administration of drug therapy sufficiently quickly leads to addiction to it with the need to increase dose and formation of drug dependence.