Hi and welcome to the Chiari forum.
No Chiropractors and no PT on the neck at least until u speak with a true Chiari specialist...the thing is it is hard to locate a PT tech that knows and understands Chiari and it can cause more problems then it may offer to help.
U may want to try heat, and anti inflammitory foods to help...and they should avoid activities that cause symptoms to flare.We do have a list in the Health Pages....if u need help navigating please let us know : )
http://www.medhelp.org/health_pages/list?cid=186