This baffles me

[dc]

For some reason, I have a bruise — a small one — between my left hand’s third and fourth metacarpophalangeal joints, on the palmar side. This appeared in the middle of yesterday afternoon, sometime after 15:00. I have absolutely no idea where it came from In the first place, I don’t recall bashing my hand off anything (and it’s pretty unusual to do that with the palmar surface anyway), and during that period I was sitting at the computer. I was using the mouse, but I don’t rest my hand on the mouse, certainly not that hard. It’s not hugely painful, though it is interfering a bit with typing and mouse usage. I’m just puzzled about how I got it. A bruise appearing in the morning because you have done something in your sleep — that happens; but a bruise appearing while you are sitting quietly at the keyboard — how does that happen?

Comments

[tanngrisnir.livejournal.com]

That can certainly happen, but I didn’t bang any part of the hand and anyway in this location there isn’t that much of a distance to the skin (for all that, the bruise is deep, not really discolouring the surface of the skin much), and with the bones and fascial planes around there, there aren’t many places it could have come from. Nor is there any discomfort anywhere else, for that matter. The discolouration and the discomfort are very localised.

Weird.