* Insomnia is a condition characterized by poor quality or quantity of sleep, despite adequate opportunity to sleep, which could lead to daytime functional impairment.
* Many medical and psychiatric conditions may be responsible for causing insomnia.
* Insomnia may, at times, be unrelated to any underlying condition.
* There are several useful non-medical behavioral techniques available for treating insomnia.
* Medications are widely used to treat insomnia in conjunction with non-medical strategies.
* Sleep specialists are medical doctors who can play an important role in evaluating and treating long-standing (chronic) insomnia.