The headaches start with a twinge at the temples. It slowly grows stronger over the course of several hours until it feels like hot pokers are being forced in behind my eyes. The sensation of pain is accompanied by nausea, the combination of which often makes it difficult to remain still. Sometimes I vomit. It usually continues for most of a day. Often the pain will wake me from fitful sleep. Sometimes it's not even gone by morning.
These headaches were, varying in severity, a near-weekly occurrence for me at least as far back as middle school. Usually made worse by lying down—I've always been a side-sleeper—I'd often have to position myself sitting up to moderate the pain enough to sleep. Sometimes that wasn't sufficient, and standing up and walking around was the only way to tolerate the pain. Watching comedy is a good distraction. I've seen South Park: Bigger, Longer & Uncut a lot.
Pain and chronic illness go hand-in-hand. To live well with chronic illness requires learning how to listen to and understand pain. This is my experience with chronic pain.