Relation between injury of the periaqueductal gray and central pain in patients with mild traumatic brain injury: Observational study.

Abstract:

:The periaqueductal gray (PAG) plays a pivotal role in pain modulation. We attempted to examine the relation between injury of the PAG and central pain in patients with mild traumatic brain injury (TBI).Sixty-one patients with mild TBI with central pain and 31 healthy control subjects were recruited for this study. Visual analog scale (VAS) was used for evaluation of central pain. The region of interest was defined for the PAG and the fractional anisotropy (FA) and apparent diffusion coefficient (ADC) were measured.The FA value was significantly lower in the patient group than in the control group (P < 0.05). However, no significant difference in the ADC value was observed between the patient and control groups (P > 0.05). VAS score of the patient group showed significant moderate negative correlation with the FA (r = -0.38), while no significant correlation was observed between VAS score and the ADC value (P < 0.05).We demonstrated injury of the PAG in patients with central pain following mild TBI and the degree of injury of the PAG was closely related to the degree of central pain.

journal_name

Medicine (Baltimore)

journal_title

Medicine

authors

Jang SH,Park SM,Kwon HG

doi

10.1097/MD.0000000000004017

subject

Has Abstract

pub_date

2016-06-01 00:00:00

pages

e4017

issue

26

eissn

0025-7974

issn

1536-5964

pii

00005792-201606280-00046

journal_volume

95

pub_type

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