Hi and welcome to the Chiari forum.
Please do not attempt to pull on ur neck, if u do have chiari leave it to the drs and only a chiari specialist....it may do more harm than good, and unfortunately that HOUSE episode was not a good indication of how chiari is relieved....no pulling on my head would have helped.
I am glad that that episode at least gave u the name chiari to research if nething else.
I would suggest u get copies of all the MRI's CT scans and blood work...get reports and all the films on disk....u will need to see if ur brain MRI's r "normal" or if the drs felt chiari was an insignificant finding as many do.
Going forward, always request copies of all testing, this makes it easier to get a 2nd opinion.
The fall from the horse is enuff to cause a syrinx to form...so u deff should have more MRI's of the rest of ur spine to be sure u r not dealing with that issue.
We do have a list of drs here, I would suggest using that as a starting point for ur research for a dr that is right for u.
http://www.medhelp.org/health_pages/list?cid=186
We r happy to have u join our little family, not happy for the circumstances that had u seek us out.
"selma"