Today is the first day in a week where I haven't had a headache (yet). Going to go to the doctor about it. Having all the headaches I mean. I took six Panadol the other day (not all at once) and I still had the headache.
I've had periods over the past year in which I've suffered from daily headaches for weeks or months at a time. I went to the dentist about it when the pain started going up the right side of my face from my molars to my eye socket and around the side of my head, since I thought I might have an infection in the dental nerve or something, and the dentist said that it was being caused by tension in my jaw muscles.
I found that the headaches stopped during breaks from my dexamphetamine, and I think sometimes the dexamphetamine increases the tension in my muscles, which are usually quite tense to begin with, and particularly in my jaw. After the visit to the dentist, I started consciously trying to relax my jaw muscles when they were tense, and the headaches gradually subsided over the course of a week. Caffeine is another thing that contributes to my muscle tension, and it's usually a worse offender than dexamphetamine, though it doesn't seem to go for my jaw muscles as much as it goes for my neck and shoulders.