[Hypochondriasis : the morbid fear of diseases…].

Hypochondriasis is characterized by the fear or belief of suffering from a serious illness, based on the subject's misinterpretation of physical symptoms or manifestations of bodily functions. This concept has always been a topic of debate and controversy regarding its definition, nature and nosography, which is still ongoing today. Its complex management, including psychotherapeutic and pharmacological interventions, challenges the therapeutic relationship.