Somatoform disorders are psychiatric conditions characterized by physical symptoms that cannot be fully explained by medical factors. The document defines and describes several somatoform disorders according to DSM-IV criteria, including their symptoms, causes, diagnosis, and treatment approaches. Key disorders discussed are somatization disorder, conversion disorder, hypochondriasis, body dysmorphic disorder, and pain disorder. Psychotherapy and pharmacotherapy are commonly used to treat underlying psychological factors and any comorbid mood or anxiety conditions.