There are many people who actually have headaches from this mechanism. This has been discussed several times on this BB and you might well find those via the search engine. My internet search techniques leave a lot to be desired. I do not recall any precipitating dental work, but I do fit the menopause model cited in the article, and also experienced a metallic taste for several months in 1997. I attributed this to GERD, now controlled by diet.
Prescription drugs are absolutely the last choice.
Blessings, Zan Thanks, Walt, I'll try the toothpaste. Thanks, Walt, I'll try the toothpaste.