Headache during hemodialysis - an uncommon cause for a common problem.

A hemodialysis patient is described who was suffering from headache during his dialysis sessions. This was due to a neovascular glaucoma causing an increase in intraocular pressure (IOP) during dialysis sessions. After several months his headache decreased but his IOP measurements remained high with almost similar pre- and post dialysis values. Headache during hemodialysis may be due to glaucoma, but this can disappear with time, along with a disappearance in the increase in IOP during dialysis sessions.