This is a group of psychiatric disorders with various somatic symptoms as their main clinical manifestations (hence the name somatoform), where the presence of organic damage or clear pathophysiological mechanisms cannot be confirmed, but where there is evidence of close association with psychological factors or internal conflicts. They include: somatization disorders, undifferentiated somatoform disorders, hypochondria, body dysmorphic disorders, somatoform vegetative dysfunction, somatoform pain disorders, and other clinical types. These patients can be encountered in a variety of health care settings, both outpatient and inpatient. In foreign countries, it has been found that more than 40% of patients in internal medicine clinics have unsubstantiated somatic complaints, and the problem is that these patients are not recognized by internists and are not encountered by psychiatrists, thus creating a delay in the diagnosis and treatment of the disease. The disease is usually predominant in women, especially in rural women, and the age of onset is mostly before 30 years. Patients are generally low in literacy and high in suggestibility.