What do you think about lack of impulse control, coupled with entitled thinking?
Those are symptoms of disorders, but not disorders themselves. It's like chest pain is a symptom of something that may include heart disease, but it's not heart disease on its own. One can have chest pain without having heart disease.
Would Narcissistic Personality Disorder fit here?
We don't know that he had NPD and even if he did, there's great debate on whether or not this is a mental illness.
I said this on another thread too, but I think it should be said here as well.
In the DSM, where mental health symptoms and disorders are housed, it states the following in the introductory pages of the book (page 25 if anyone wants to look it up):
"However, use of the DSM should be informed by an awareness of the risks and limitations of its use in forensic settings. When DSM-5 categories, criteria, and textual descriptions are employed for forensic purposes, there is a risk that diagnostic information will be misused or misunderstood. These dangers arise because of the imperfect fit between the questions of ultimate concern to the law and the information contained in a clinical diagnosis."
Basically, it's a book for clinicians, not to make determinations of mental illness in response to a crime.
Diagnosis of a personality disorder is not made based on one event, but rather a lifetime (or at least many, many years) of behavior, per the DSM. As far as I know, we don't have information about this guy's lifetime behavior.
Also as an aside, stuttering is also in the DSM as is learning disabilities. I think we'd all agree these are not considered mental illness, so just because something is out of the ordinary or represents a disorder in the DSM doesn't mean it's mental illness that can or should be used to determine criminal motivation, IMO.
www.reuters.com
