I had whiplash injury 3 years ago. I have stiffed neck , 24 hour pain in neck and head , I can't sleep . I have done every thing to heal this but nothing is working. I have tried physiotherapy , oil massage, homeopathic, ayurvedic, allopathic, ice packs , heating pad ,yoga nothing is working , now I have started having some mental problems. Concentration is zero , can't understand things. Is there anything left which I can try to heal this.