My headaches are better when I pay attention to what's heading down to the band as regards speed, size, and quantity. If I swallow liquid or food too quickly, the flash headache comes on but doesn't last long if I stop eating/drinking (which, of course, I do because of the pain). My doctor didn't seem too interested in hearing about the headaches, but did concur that a nerve could be involved in my band thus causing the sudden headaches. His nurse was the most helpful by reminding me to pay attention to my body for signs of the headache coming on and stop short.