I have been searching the web for possible information about codeine apparently (according to my GP) causing migraines and about it being a good cure for migraines (according to the doctor I saw at the Pain Clinic a few years ago):
Medicines to Treat Migraine Attacks
Information about Codeine
Drug Profiles: Codeine - Migraine Awareness Group: A National Understanding for Migraineurs
Migraines & headaches health centre: Migraine in Children - Codeine
Can Weather Trigger a Migraine?
Other tabs I have open that I was interested in enough to want to link to them:
The Shrink & The Sage: Should we fear the worst? ‘People cope with what they consider disasters much more positively than they would have guessed’
For Mice, and Maybe Men, Pain Is Gone in a Flash - Researchers find a way to turn pain on, and off, with a beam of light.