Welcome to Neuro talk. Another member did post the forum to search. I do know what Chiari is, but I am not a doctor just a member here on the site. I am sorry you are experiencing these headaches. Please do call your Neurologist. Any time you have headaches that seem to be worse, is the time to call and get an evaluation. I hate to go to the doctor too, but perhaps it is time to give him a call. I am glad you found Neuro Talk, there will be other members that have this disorder to talk to. I hope you find the remedy to the headaches. ginnie