Stanley L. Goodman M.D.

5535 Balboa Blvd. Suite 215

Encino, CA 91316

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STANLEY L. GOODMAN, M.D. – Qualified Medical Examiner #962948

Diplomate, American Board of Psychiatry & Neurology

in Forensic, Child, Adolescent, Adult, Addiction, and Geriatric Psychiatry

MAIN OFFICE – 5535 Balboa Boulevard, Suite 215, Encino, California 91316 Phone: 818-986-7826 Fax: 818-986-7834

E-mail: slgoodmanmd@goodmanforensic.com ~ Website:  www.stanleylgoodmanmd.com

SATELLITE OFFICES – Los Angeles ~ Pasadena ~ Long Beach ~ Cerritos

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THE NEUROPSYCHIATRIC BASIS OF POST-TRAUMATIC STRESS DISORDER

 

A traumatic situation, where a threat to one's body integrity or life occurs, may produce severe anxiety symptoms which are diagnosed as Post-Traumatic Stress Disorder (PTSD). Most patients also develop a concurrent agitated depression.

 

The Neuroanatomical Basis of Post-Traumatic Stress Disorder

 

The reason treatment of PTSD is prolonged can be understood on the basis of neuroanatomy. A group of neurons in the brain stem (below the cortical areas of the brain) are called the LOCUS CERULEUS. Connections between the LOCUS CERULEUS -- which activate the brain/memory center in the temporal lobe of the brain (the HIPPOCAMPUS) -- are a neuroanatomic basis for the recurrence of PTSD since this area of the brain contains norepinephrine-containing neurons with neuroanatomic connections to the HIPPOCAMPUS. When a person reexperiences a trauma, the hypocampal connections activate the norepinephrine-containing neurons. This norepinephrine surge causes subjective symptoms of severe anxiety -- a "flight or fight" response -- which is maladaptive when one experiences a non-life-threatening trauma. For example, a person traumatized by a past auto accident later experiences severe anxiety even while riding safely in a car.

 

Treatment of Post-Traumatic Stress Disorder

 

Psychotropic medication to treat depression and anxiety -- i.e., anti-depressants and anti-anxiety agents -- cannot diminish PTSD trauma-induced memory and are only partially effective in decreasing PTSD anxiety/depressive symptoms. Since trauma-induced memories last a lifetime, there is need for extensive, prolonged psychological treatment, i.e., cognitive behavioral therapy/desensitization. However, psychotherapy also is only partially effective in reducing locus ceruleus-induced norepinephrine cerebral activation which occurs during the frequent re-experiencing of the traumatic event.

 

Summary

 

Knowledge of the neuropsychiatric basis of PTSD is essential in order to understand the chronicity, as well as the need for long-term lifetime treatment.1

1.Textbook of Neuropsychiatry, edited by Stuart Yudofsky and Robert E. Hales, M.D. (American Psychiatric Association Press, June 1997).

 

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