The Bible does not say anything specifically about Post-Traumatic Stress Disorder, but it does teach many examples that will help a person overcome any form of traumatic experience. There are a lot of biblical principles about how to care, love, and encourage sufferers of trauma.
Psalm 61:2-3 From the end of the earth will I cry unto thee when my heart is overwhelmed: lead me to the rock that is higher than I. For thou hast been a shelter for me, and a strong tower from the enemy.