I've been pretty grumpy for the past few weeks, and not really sure why.
After much badgering from my wife I made appointments to see my doctor.
After poking around a bit and peering into dark recesses, he told me I had a problem with my sinuses - aka Sinusitis.
Great. That explains the toothaches, headache and general grumpy demenour. And I thought it was because Iwas getting oldd.