In DSM-5, somatoform disorders are now referred to as somatic symptom and related disorders. In DSM-IV, there was significant overlap across the somatoform disorders and a lack of clarity about their boundaries. These disorders are primarily seen in medical settings, and nonpsychiatric physicians found the DSM-IV somatoform diagnoses problematic to use. The DSM-5 classification reduces the number of these disorders and subcategories to avoid problematic overlap. Diagnoses of somatization disorder, hypochondriasis, pain disorder, and undifferentiated somatoform disorder have been removed.