"In our opinion, it is worse if a psychotic person is sentenced to detention than if a nonpsychotic person is sentenced to compulsory health care, " Mr. Holden said.

WSJ: Prosecutors Seek Psychiatric Care for Breivik

Here is a very important point: If the person is psychotic on an ongoing basis -- that is, acting and thinking bizarrely throughout most aspects of his or her life -- then it is of utmost importance to get that person treatment.

CNN: Can traumatic brain injury trigger mental health issues?

Instead, he said, Holmes' blank, emotionless expression fits what happens in a psychotic breakdown that severs a person's ability to distinguish reality from fantasy.

CNN: STORY HIGHLIGHTS

If the only problem is that the person is convinced of the reality of these experiences, but doesn't have any other ongoing psychotic experiences or behavior, I'd consider him or her a fairly lucky person and let the issue alone.

CNN: Can traumatic brain injury trigger mental health issues?