Chronic insomnia affects a significant proportion of the French population with an estimated prevalence between 15% and 20%.~This disease is mainly managed by general practitioners for whom benzodiazepines and Z-drugs (zopiclone, zolpidem) represent the first-line treatment. The french health authorities recommend limiting the consumption of these molecules to 2 to 4 weeks taking into account their possible undesirable effects (eg memory impairment, in the elderly, road accident) as well as the risk of tolerance and addiction. However, it appears that a majority of the patients concerned become chronic consumers.~The investigators propose to assess cryo-auriculotherapy in the treatment of chronic insomnia.~The population studied will consist of patients with chronic insomnia, whose diagnosis has been made according to the definition in the diagnostic and statistical manual of mental disorders (DSM-5), and followed up in an outpatient clinic at Foch Hospital or in one of the participating centers.~Half of the patients will be treated with cryo-auriculotherapy (use of a device with nitrous oxide) and compared with control patients who will have the same treatment visits involving a sham device (device without nitrous oxide).
The aim of the study is to show that auriculotherapy is effective in the treatment of chronic insomnia.