Headaches viewing computer screen.?

I had a buddy with the same problem it's not a bad thing but it not a good thing . It is caused from the monitors frequency . Check the frequency setting of the monitor you use at home I bet its about 60htz and the one you use at work is probably about 75htz. Just a little difference cause problem for folks head and makes them get headaches. Try this with work approval. Take monitor from home into work have a tech take it's specs for Frequency. then have tech set it up for you have him then look at spec of other monitor you use normally at work. poof problem solved.