Sleep disorder

What is sleep disorder? Today most of the people in the world are facing this problem. It is actually a disorder of the regular patterns of the sleep. It looks like small problem but it is connected with other problems. Since it interrupts our normal mental function, one must give full attention in taking care of this problem. There are numerous sleep disorders. Some of the worst disorders are insomnia, bruxism and cataplexy. Of this insomnia is the one which makes the person difficult to get sleep.