It doesn’t ALWAYS work but it works enough times for me to mention. I’m talking about one of those headaches that is based at the intersection of your head and neck. I first heard tell of this solution on a really silly PBS historical drama called Lark Rise to Candleford. What happened in the show was the the new, wealthy hotel owner in the village falls in the love with the progressive spunky post office mistress. All is well until this nasty, controlling, older woman shows up and turns out to be the hotel owner’s ex-lover and secret business partner. She decides to intimidate the post mistress by telling her intimate details about the hotel owner, for instance that he has frequent insomnia caused by headaches (scandalous, what an intimate detail!) that she alone could cure by sticking the hard edge of a book at the base of his head. This was later confirmed when my physical therapist would end my dry needling appointments by making a ridge with her fingertips and placing them in the same point with the weight of my head pressing down. Whether it’s a blood flow thing or a pressure point thing (maybe that’s the same thing?) there’s a definite reaction that happens, most often followed by some pain relief. Best of luck! At the very least you’ll have something to read. Just don’t get the book Lark Rise to Candleford was based on.