Sleep disturbance. A component of health status.

Insomnia clearly impairs the quality of life of patients because it interferes with the ability to function, both physically and psychologically. Well-being and satisfaction with daily life may also be impaired by sleep disorders. The assessment of quality of life in patients with insomnia should rely on the use of a recognised validated clinical scale and a specific questionnaire targeted to areas of interest for the patient, namely daily functioning and well-being. The final choice of scale depends on the context of clinical use and study objective.