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New Method to Classify Schizophrenia Symptoms Should Improve Care

Development of symptoms associated with schizophrenia can dramatically change a person’s life trajectory. This is because negative symptoms in schizophrenia can be so disabling that they interfere with a person’s ability to attend school, begin a fulfilling career, and even live independently.

Symptoms of schizophrenia appear during adolescence or young adulthood with an average age of onset of 18 in men and 25 in women. In the new study, University of Nevada – Las Vegas psychology professor Dr. Daniel Allen and colleagues suggest a new way to classify the negative symptoms of schizophrenia.

The new methodology, published by JAMA Psychiatry, should improve intervention and treatment of the negative symptoms associated with schizophrenia and influence future research. Previous literature suggested that the negative symptoms of schizophrenia should be placed into two categories. Allen and his colleagues suggest that that view is too simplified.

To reflect the complexity of the disease, and to focus on more specific treatments, Allen suggests that the symptoms be placed into five categories. Allen says it is important to understand the symptoms of schizophrenia so we can measure them accurately.

“Correctly measuring these symptoms allows us to judge whether or not the person is improving or getting worse,” Allen said. “Or whether or not we’re developing medications that are actually helpful for the disorder that they have, or not helpful.”

Measuring symptoms in schizophrenia and other mental disorders can be difficult because it is heavily subjective, dependent on what people tell their doctors about the symptoms they are experiencing.

This makes care for the disorder challenging as the effectiveness of clinical care differs from a disease like cancer, where the effectiveness of treatments can be measured against the size of a tumor, and whether it’s shrinking.

Therefore, scientists like Allen believe an increased level of specificity is necessary when assessing people with schizophrenia. He recommends great care be taken to make sure that questions are asked about the kinds of symptoms people with schizophrenia experience — including negative symptoms.

His study, which he wrote with Gregory P. Strauss — his former UNLV student and current assistant professor of psychology at the University of Georgia — highlights the complexity of the disease and its symptoms.

“People with schizophrenia will continue to have these persistent, negative symptoms that interfere with their ability to function, live independently, hold a job, get married, and other important life goals and activities, and we need better treatments for them,” Allen said.

“It’s one of those areas in schizophrenia where there’s a lot of recent research interest in how to develop new medications or behavioral interventions that can remediate these symptoms so people can begin to live normally.”

Experts explain that schizophrenia is a serious mental disorder. Most people associate schizophrenia with unusual or bizarre symptoms, including hearing voices or seeing things that do not exist, delusional beliefs, and disorganized thinking and behavior.

However, other symptoms, referred to by scientists as negative symptoms, represent normal behaviors and abilities that the person has lost. These symptoms usually lead to long-term functional impairment.

Negative symptoms include the inability to experience pleasure, the inability to motivate oneself, the inability to socialize, diminished or total lack of facial expressions, and reduced quantity of speech.

“I think what we hope is that this study, and studies like it, will help us increase our understanding of the kinds of symptoms that people with schizophrenia experience and what kind of treatments are useful in improving those symptoms,” Allen said.

Source: University of Nevada – Las Vegas



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