Brain's Signaling Systems Might Determine PTSD Severity

December 10, 2015

People with post-traumatic stress disorder (PTSD) appear to have an imbalance between two of the brain's signaling systems, a new study suggests.

The greater the imbalance between the two neurochemical systems -- serotonin and substance P -- the more severe the PTSD symptoms, the Swedish researchers reported.

For the study, published recently in the journal Molecular Psychiatry, the researchers used PET scanners to measure the relationship between the two brain signaling systems.

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