Somatoform disorders involve physical symptoms that cannot be fully explained by medical factors and are thought to be linked to psychological issues. Key somatoform disorders discussed include somatization disorder, conversion disorder, pain disorder, and hypochondriasis. Body dysmorphic disorder involves excessive concerns about perceived physical defects. Dissociative disorders disrupt sense of identity and can include dissociative amnesia, fugue states, and dissociative identity disorder. Treatment focuses on confronting trauma and integrating personalities.