The vast majority of headaches including migraines are because of muscle tension.
This is why it mostly doesn't respond to medication or conventional treatment.
How many times have we all heard the complaint of someone in an accident: I have these horrible headaches now . . .? Especially from Whiplash.
If I were a betting man kddani, I would say it was less the glare from your monitor than the posture of your body while sitting at the computer as well as various muscle imbalances created over time.
I know someone that has had chronic headaches (one never ending one) punctuated by dizziness, and feelings of dying for 3-4 years as a result of a couple accidents.
After a lot of medication and expensive therapy she stumbled on the idea of "trigger points" and picked up a couple books. Some of the therapy she received was trigger points and seemed to make a difference.
Anyway, the progress she made from 10 days of manipulating her own trigger points has exceeded 18 months of expensive therapy.
Headaches have lessesned in intensity, duration and frequency. She has also had obvious improvement in range of body movement especially the head and neck.
I have tried it myself and it definitely works. Over time you can clear the trigger points totally and thus get rid of the pain pattern.
I have done a bunch of follow-up research. The original Doctor that did much of the research was Janet Travell, JFK's Doctor. Her and David Simmons wrote some definitive text books on the subject.
Their research found that a lot of our problems are muscular in origin . . .
Anyway, she and I have found that certain foods and products will definitely intensify headaches, but if you are really aware you will notice that they tighten certain muscles, often in the head, neck and upper back which are the real culprits.
Assuming you are serious about taking charge of your own health I'll post the title of the books, if you ask.
But its probably the best way to permanently get rid of things like headaches . . .
Oh and Justamom, it works on Tennis Elbow also, and will prevent Tennis Elbow from returning
Have a nice day everyone