As a member of that club that spends much of the day squinting at a screen, I am prone to the kind of headache that starts right behind the eyes and then dwells in the lower forehead, ominous as a cloud. At this time of year, the headache risk is exacerbated by the allergens in the air, which dry out my eyes and make my contact lenses uncomfortable. If I take out the lenses too late, BOOM. The headache is there and it's not leaving.
The problem with these headaches, aside from an annoying low-level pain, is that they prevent any sort of creative endeavor. I can't write, can't read, can't even summon the energy to pay bills.
The headache is resistant to Advil and massage. We cannot kill the monster with these weapons, as a wise man once said.
For me, then, the writer's headache is a more serious threat than writer's block.
Does anyone else experience this phenomenon?