Perhaps the best treatment for whiplash is Cranial Sacral Therapy. It is one of the few treatments that can be done the same day as a car accident. It is so gentle and beneficial for spinal whiplash because it is not manipulation but rather an aid to help the body recover with it’s own inherent healing ability.
It is common after more serious accidents to just ice the areas until inflammation settles down. Sometimes very gentle stretching can be done by a physiotherapist as well. After my MVA in 1997, I had Cranial Sacral the day of my accident. It calmed my emotions and my spinal cord/vertebrae helping me go back into alignment after really bad whiplash.
I found it so helpful because no one asked me how I was doing emotionally and unbeknownst to me, I had developed post-traumatic- stress disorder. Cranial Sacral was the only thing that took away my pain and my fear. Allowing me to continue driving and heal much faster. This is why I became a Cranial Sacral Therapist. I felt I would really be helping other people who were really suffering.