DSM-IV

精神疾病診斷及統計手冊(Diagnostic and Statistical Manual of Mental Disorders)
第一軸：臨床疾患
第二軸：人格疾患、智能不足
第三軸：一般性醫學狀況精神患者
第四軸：心理社會及環境問題

16類精神疾病：
1通常初診斷於嬰兒期、兒童期或青春期的疾患 (Disorders usually first diagnosed in infancy, childhood, or adolescence)
2譫妄、痴呆、失憶性疾患及其他認知疾患 (Delirium, Dementia, and Amnestic and other Cognitive Disorders)
3一種一般性醫學狀況造成的精神疾患(Mental disorders due to a general medical condition not elsewhere classified)
4物質關聯疾患 (Substance-related disorders)
5精神分裂及其他精神性疾患 (Schizophrenia and other psychotic disorders)
6情感性疾患 (Mood disorders)
7焦慮性疾患 (Anxiety disorders)
8身體型疾患 (Somatoform disorders)
9人為疾患 (Factitious disorder)
10解離性疾患 (Dissociative disorders)
11性疾患及性別認同疾患 (Sexual and gender identity disorder)
12飲食性疾患 (Eating disorder)
13睡眠疾患 (Sleep disorders)
14他處未分類之衝動控制疾患 (Impulse-control disorders not elsewhere classified)
15適應性疾患 (Adjustment disorders)
16人格疾患 (Personality disorders)