Gosh, I have always found tight watches to be extremely irritating and can't stand to wear a watch unless it's loose enough that it can slide around my wrist easily.
Er, hmm. It was a long time ago. Something tendon-related, I think. Tenosynovitis, possibly? I remember that at the time I was more or less convinced it had to do with having played the violin for most of my childhood and contorted my left wrist round at a silly angle to do so.
Ooh. It wasn't down the side of your thumb, was it? Because I have been getting tenosynovitis there since I started canoeing but it didn't hurt worse when I was actually paddling, so the only thing I could think of was it being from lifting boats and putting too much strain on my wrists. And it got worse when the weather got colder. And I have just had a bit of a brainwave that in the cold weather we wear cag tops with watertight seals at the wrists so as not to get soaked all the time with cold water...hmm. And the doctor I talked to wouldn't necessarily know about that in order to suggest it as a cause when I went to see him.
What sort of wrist pain was it?