Hi Galaxy1012,
I don't have any personal experience with propranolol but I am aware of it's use for PTSD. Propranolol has been shown (clinical studies) to help with one of the more disruptive symptoms of PTSD, memories/flashbacks.
http://www.theatlantic.com/health/ar...p-ptsd/252079/
Although your Neurologist can prescribe medications that could help with PTSD my personal preference is a Psychiatrist as this area (PTSD) is in their field of expertise as is the medications.
Take care