I used to suffer from migraines, due to a bout of encephalitis I had when I was in my twenties. I haven't had one in years, yet today I felt the first signs of onset, and it sent me scuttling in fear to the medicine cabinet. There was precious little there to take, so I ended up just trying to calm it away. It seems to have worked.
My migraines are brought on by stress, so I guess it made sense that relaxing should banish one. Still, I feel thankful that it didn't blossom into a full-blown attack, which would have left me blind and writhing in pain. Now I just need to figure out what I'm stressed about.