Can BPD Be Due To A Head Injury?

QUESTION:

Dear Dr. Heller,

When I was fifteen I was struck by a car.  It resulted in me being in a week long coma.  Can BPD be a result of this kind of head injury?  As a result of the accident, I also have physical problems.  I have epilepsy and narcolepsy.  Can you tell me what is the relationship between these illnesses and BPD?

Thank you.

ANSWER:

The BPD can indeed be caused or worsened by a head injury.  During the many BPD support groups I ran, approximately 1/3 had significant head injuries in their past.  I believe the BPD is caused by damage to the brain’s instinctual trapped, cornered, wounded animal response – located within the limbic system, and is likely a form of epilepsy (nerve cells firing inappropriately and out of control).  I don’t know of any link with narcolepsy and the BPD.