Abstract
Questioning is indispensable to estimate Axis II of Temporomandibular Disorders (TMD). The value of Axis II of TMD combines the chief complaint, history of symptoms and objective findings, and is useful. It is recommended to use "Diagnostic and Statistical Manual of Mental Disorders" (DSM) when checking a mental disease by using the value of Axis II. DSM-5, which was revised as the 5th edition in 2013, is used at present. The term "Somatoform Disorders" disappeared in DSM-5 and the term "Somatic Symptom and Related Disorders" appeared newly, and so a disease called Somatic Symptom Disorder and Illness Anxiety Disorder was established. This diagnostic name can now be used, but further study is necessary.