Insomnia. From a single entity to a complex concept

This paper presents a summary of 106 patients monitored at the Sleep/Wake Disorders Center of the University Hospital in Antwerp. Diagnostic assessment is based upon information from history, physical and psychiatric examination, sleep logs, psychological tests and polysomnographic workups, including at least 2 consecutive nights. A major conclusion is that complete understanding of sleep problems needs a multifactorial approach. This not only leads to a more accurate description of the disorder, but also to rational, specific and individualized treatment strategies.