unfortunately there have not been any new medications for headache prevention in the last 3 years. there is a treatment (occipital nerve stimulator) that works for chronic daily headaches but it is not yet fda approved for this. the results of a clinical trial of this should be published later this year or early next year. as far as diagnosis goes there still is no way to find the cause of daily headaches if the mri scan of the brain is normal. there are some patients with neck problems that have daily headaches so i usually recommend having someone evaluate patients for neck problems as well. for treatment we usually try all of the "normal" medications for headache prevention.
have there been any advancements in diagnosing or treating chronic daily headaches?