Washington

TOO many pendulums have swung in the wrong directions in the United States. I am not referring only to the bizarre all-or-nothing rhetoric around gun control, but to the swing in mental health care over the past 50 years: too little institutionalizing of teenagers and young adults (particularly men, generally more prone to violence) who have had a recent onset of schizophrenia; too little education about the public health impact of untreated mental illness; too few psychiatrists to talk about and treat severe mental disorders — even though the medications available in the past 15 to 20 years can be remarkably effective.

Instead we have too much concern about privacy, labeling and stereotyping, about the civil liberties of people who have horrifically distorted thinking. In our concern for the rights of people with mental illness, we have come to neglect the rights of ordinary Americans to be safe from the fear of being shot — at home and at schools, in movie theaters, houses of worship and shopping malls.

“Psychosis” — a loss of touch with reality — is an umbrella term, not unlike “fever.” As with fevers, there are many causes, from drugs and alcohol to head injuries and dementias. The most common source of severe psychosis in young adults is schizophrenia, a badly named disorder that, in the original Greek, means “split mind.” In fact, schizophrenia has nothing to do with multiple personality, a disorder that is usually caused by major repeated traumas in childhood. Schizophrenia is a physiological disorder caused by changes in the prefrontal cortex, an area of the brain that is essential for language, abstract thinking and appropriate social behavior. This highly evolved brain area is weakened by stress, as often occurs in adolescence.

Psychiatrists and neurobiologists have observed biochemical changes and alterations in brain connections in patients with schizophrenia. For example, miscommunications between the prefrontal cortex and the language area in the temporal cortex may result in auditory hallucinations, as well as disorganized thoughts. When the voices become commands, all bets are off. The commands might insist, for example, that a person jump out of a window, even if he has no intention of dying, or grab a set of guns and kill people, without any sense that he is wreaking havoc. Additional symptoms include other distorted thinking, like the notion that something — even a spaceship, or a comic book character — is controlling one’s thoughts and actions.