Insomnia is among the most common health complaints in medical practice and the most prevalent of all sleep disorders. Generally, hypnotics and sedative drugs are widespread used, despite new knowledge in medical literature. Chronic insomnia can be a symptom, a syndrome and co morbid disorder. Its diagnostic relies on subjective reports from patient and sleep diary. Different subtypes of insomnia are defined: prolonged sleep latency (sleep onset insomnia), difficulties in maintaining sleep (sleep maintenance insomnia), early insomnia or a mix of different sleep complaints (mixed insomnia). Beside nights complaints, diurnal consequences are reported, include fatigue, mood disruption impaired attention鈥?First, identification and treatment of primary psychiatric disorders or medical conditions or specific sleep disorders (apnea syndrome or periodic limb movement) are essential and associated with sleep hygiene (therapeutic education). If this first step is not sufficient, behavioral therapy (BT) (stimulus control and sleep restriction) or cognitive-behavioral therapy (CBT) of insomnia have demonstrated considerable efficacy within randomized clinical trials. Other techniques exist: relaxation, biofeedback鈥?But CBT or BT is gold standard. Nevertheless, treatment of insomnia is an individual course of care.