Dear friend, welcome and thanks for entrusting your query here at HCM!
I am Dr. Prasad Akole (Critical Care Expert- http://bit.ly/Dr-Prasad-Akole) and am glad to address to your query here.
It is difficult to call it a conversion disorder
without knowing if you had any traumatic brain injury
after the trauma
Can you tell if you had any brain scans and reports?
And after 4 years, what is problem that you face?
Please let me know older reports to be able to answer your question.
I would be glad to answer any further queries.
Thank you and Good luck!