can you have more than one mental disorder at the same time,

一个人可以同时患一种以上的精神病吗
people with dissociative disorder

患有解离性障碍的人
often show symptoms of posttraumatic stress disorder or PTSD.

常常有创伤后应激障碍的症状
What causes it?

它的病因是什么
Well, it is often argued to be the cause--

人们常常争论这病因
caused by severe abuse, often sexual or physical abuse.

是由严重受虐引起的通常是性虐待或体罚
The problem is most people who get abused

问题是绝大部分曾受虐的人
don't develop dissociative identity disorder.

并没有解离性人格疾患
And one idea is that

有个理论说
it's abuse plus some sort of genetic or biological predisposition

受虐加上某些遗传因素或生物素质
to dissociate

才会导致人格分裂
and in fact, people with dissociative identity disorder

事实上解离性人格疾患的人