The accupressure supposedly decreases headaches, how exactly I don't know. You can search using "headache accupressure" or "headache meridian points" for info and techniques. This Memorial Sloane Kettering site has some info and videos on using accupressure ( https://www.mskcc.org/cancer-care/patient-education/acupressure-pain-and-headaches ). Regarding meridian points, I was stung by a wasp on my right temple a few years ago (allergic, but only a rash). A few days later I got trigger finger on my right ring finger. It went away after accupuncture and a cortisone shot. I got stung on the meridian point for that nerve at the base of my ring finger.