Does domestic abuse play much of a role in ptsd?

Yes: Domestic abuse and violence are frequent partners of ptsd, and can induce it also. Children who suffer emotional, physical, and sexual abuse are often also exposed to domestic violence in their parents. They can easily end up later with partners who repeat the abuse. Getting treatment for the ptsd helps bring these issues into awareness, so that more appropriate self-protection can happen.

It can: I agree with dr. Pappas. Witnessing or experiencing domestic violence can contribute to development of ptsd. The men i see returning from combat with ptsd have a higher incidence of domestic violence.