Sleep disorders are quite common and can affect people of any age. People often complain of not getting enough sleep, not sleeping well or not being able to fall asleep. The consequences of lack of sleep are obvious, bags under the eyes, skin, dimly lit, limp and heavy eyelids, anxiety, irritability, nervousness and fatigue.

Sometimes the inability to sleep is caused by reasons quite simple to understand, for example, the presence of disturbing noise from outside or frequent bad dreams, which in this case it is easier to deal with the problem. However, frequently, there are underlying reasons more difficult to resolve. The age is often associated with an inability to sleep well. Sleep disorders are presumably generated by abnormalities of the mechanisms that regulate the sleep-wake cycle.

Insomnia: The term insomnia indicates the difficulty of falling asleep. It is a feeling shared by many being unable to sleep or the impossibility to stay asleep for long enough to be able to rest. We can speak about  insomnia only in cases where lack of sleep causes real physical or mental problems to the person, but not when a person sleeps little and still feels rested and or has a happy sleep.

In fact, some people have a minimum need for sleep. A few hours are enough to make them rested and this is because not everyone has the same physical demands. Insomnia is a disorder, a symptom that shows the presence of impairment or another problem in the body. The causes that determine the onset of the disorder are varied and there are various types of insomnia

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