A friend of mine says he had these. He says the only way to keep them away is to drop acid once in a while.. or move closer to the Equator. Something to do with serotonin levels?
I have a very mild form of neuralgia that causes me to have episodes of lancing pain behind in one side of my head (sometimes behind one eye). The pain only lasts for about 5 seconds to a minute, but it's bad enough to make my face involuntarily contort; I sometimes break out in a sweat or start to hyperventilate during the long ones. They come in clusters; I'll have maybe 3 (give or take) in a day for a few days, then next to nothing for weeks, often months.
When I was diagnosed my doctor told me: "Whatever you do, don't go home and wiki this. You'll just scare yourself." He explained that what I experience is apparently a drop in the bucket compared to what people with cluster headaches (and atypical trigemnal neuralgia; I gather it's hard to distinguish the two sometimes) experience. I cannot imagine what they feel. Life can be a horrible, horrible thing.