Headaches are a pain – and if you think that’s self-evident, wait till you hear this. I’ve had one all day. I’ve also not drunk coffee in the last 48 hours, and seemed to remember hearing that a sudden lack of caffeine could induce headaches for a while. Thought I’d research it, so scanned t’Internet for “caffeine withdrawal headache”. Eventually I came across a link to a page which promised to tell me what I wanted to know.… READ MORE.... …