I once had a legitimate case of "my router is hurting my brain."
I was working in the sales department for An ISP who provided A Wireless Router/Modem/Hub Type Thing. Got a call one day from a chap who'd been told to call us to buy a non-wireless modem from us by tech support, as the wi-fi from his was interfering quite badly with his Bone-anchored hearing aid.
Cue me spending a minute talking him through turning the wifi off on his router, saving him about £30 in cost and doing the job that tech support hadn't done.
Sort of glad I dont work there any more.