complex翻译成情结没什么问题吧,我也倾向于这个解释:
Psychiatry
【精神病学】
A group of related, often repressed ideas and impulses that compel characteristic or habitual patterns of thought, feelings, and behavior.
情结一组相关的控制和抑制思想、感觉和行为特征或习惯的观念和冲动
An exaggerated or obsessive concern or fear.
夸大的或过激的担心或恐惧
Medicine
【医学】
The combination of factors, symptoms, or signs of a disease or disorder that forms a syndrome.
综合症状形成综合病症的全部因素、病症、或疾病或失调外在表象的综合特征