Will the definition of Somatiform disorders change in the DSM-V?
Yes, there are a few proposed changes for the next edition.
1) Somatic Symptom Disorders may be renamed and added with Factitious Disorder and PFAMC
2) Somatization Disorder, Hypochondriasis, Somatoform Pain Disorder, and Undifferentiated Somatoform Disorder may be combined to become Complex Somatic Symptom Disorder
3) Conversion Disorder may be renamed to be Functional Neurological Symptoms
4) Body Dysmorphic Disorder may be relocated and renamed to Anxiety and Obsessive Compulsive Spectrum Disorders