Somatization Disorder is a medical condition that is characterized by bodily symptoms that do not correspond to any underlying physical illness. This disorder is also known by several other names, including somatoform disorder, functional somatic syndrome, functional neurological disorder, and bodily distress disorder. These terms are often used interchangeably, although there are subtle differences between them. The common theme is the presence of physical symptoms that are distressing and impairing, but for which no organic cause can be found. Other related terms include hypochondriasis, illness anxiety disorder, and conversion disorder. While the diagnostic criteria and terminology for this disorder have evolved over time, the core concept remains the same - somatic symptoms without a discernible medical explanation.