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Researcher Identifies Specific Post-Traumatic Stress Disorder (PTSD) Symptoms That Impact Quality Of Life

Researcher Jason DoctorIn the case of post-traumatic stress disorder (PTSD), not all symptoms are created equal. In an effort to better treat PTSD, a study published March 1 in the journal Psychiatric Services is the first to examine which problems associated with PTSD actually correspond to lower quality of life. PTSD is more costly than any other anxiety disorder. As many as 300,000 veterans returning from Iraq and Afghanistan currently have PTSD with costs for their care estimated at $4 to $6.2 billion over the next two years.

“To our knowledge, this is the first study to ask actual patients with PTSD about their health preferences,” said lead author Jason Doctor, associate professor of Pharmaceutical Economics and Policy at the USC School of Pharmacy. “These findings identify targets for treatment that may improve quality of life among people with PTSD.”

The researchers interviewed 184 persons seeking treatment for PTSD at two treatment sites in different regions of the United States. The researchers found that of four major symptoms associated with PTSD not all were associated with a patient’s immediate quality of life even though those who sought treatment for PTSD expressed significant overall declines in mental health.

Distressing recollections of a traumatic event and avoidance of certain activities and thoughts – both commonly thought to be dysfunctional behaviors – had little correlation to a patient’s reported sense of well-being, according to the study.

However, symptoms tied to heightened arousal, such as trouble sleeping, irritability, and vigilance, were associated with lower quality of life among patients with PTSD. Anxiety and depression were also associated with lower quality of life.

“We conjecture that although avoidance is an important aspect of PTSD, its effect on quality of life may be limited because it is a coping strategy. Avoidance may be a dysfunction that improves, in the short term, subjective well-being,” explained Doctor, who is on the research faculty of the Schaeffer Center for Health Policy and Economics at USC.

PTSD presents such troubling symptoms that participants with PTSD were willing to accept a treatment with up to an average of 13 percent chance of immediate death in order to achieve total relief of PTSD symptoms.

Lori Zoellner of the University of Washington, Seattle, and Norah Feeny of Case Western Reserve University were co-authors of the study.

The research was funded by the National Institute of Mental Health.

Material adapted from University of Southern California.

Reference
Doctor et. al, “Predictors of Health-Related Quality-of-Life Utilities Among Persons With Posttraumatic Stress Disorder.” Psychiatric Services: March 2011.

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