Could be several like Münchausen syndrome and definitely someone who is a sociopath
the shoot each other
Probably not, because then they would poison themselves, unless different species piosoned each other.
Suarezochompoophilia
sometimes -- not usually. People who are anorexic do not like themselves, and if even you don't like yourself, it's hard for other people to like you. Anorexia is a mental disorder that is treatable, so an anorexic person can learn how to like themselves and have good relationships with boys and other girls.
Paranoid Personality Disorder
People are racist because people think that any other color but themselves is wrong. They think that people that arent the same as them shouldnt be around and that they are poison and if you touch them you will die but that isnt true. A persons a person no matter what color or shade.
Information about people with the bipolar disorder can be found on online resources like MayoClinic. Other medical websites with information about people with bipolar disorder can be found on WebMD and HelpGuide.
no more often than any other people.
by killing other Animals ,Things, and people
People who enjoy seeing others suffer are often referred to as sadists. This behavior is a form of psychological disorder known as sadism.
it depends on what kind of eating disorder. sometimes depression or maybe other people telling you you're fat
People with Dissociative Personality Disorder (Previously known as Multi-Personality Disorder) are most of the time unaware that the other personalities exist.