I had an operation on my ear (mastoidectomy) to remove some infected bone. Which appears to have worked, but it hurts like hell. The op was November 2001, the pain started to get really bad a few months later so I went and asked about it but the guy I saw (he wasn't the surgeon who carried out the procedure) basically shrugged it off and gave me some anti-imflammatory drops, which didn't help at all.
When I last went I actually got to see the guy who did this and he said it might be toothache and that even though it feels like it's my ear, it could be a dental problem. Which is a fair observation, but it's not the vague, unfocussed pain you might expect given that. It's sharp and it's right below the scarred skin.
It sucks, because I can't concentrate on anything, I get really impatient because of the pain. I think I am dependant... At least on a mental level.