Oh, not sure whether what happens with me is the same as I don't get any itching with it, but my finger & toe joints bruise excessively for almost no reason & have done for around a decade or more. Just opening a door with a lever handle or shifting weight in the shower can be enough to cause sudden intense bee sting pain, immediate swelling with a cushion-like sensation, then disproportionate bruising that can be widespread. Last time this happened I was simply standing on our very thick bath mat when I felt the tell-tale sting & sure enough on lifting my foot to look at the sole, there was a bruise spreading from around the joint at the base of my little toe, which with me is a common site for it. I am underweight so its' not excessive pressure on feet that causes it, though also flat-footed so maybe there is more pressure than there should be! That doesn't explain the same thing happening in finger joints though. Does this sound like what happens with you, ladies? Not sure because I get no itching with it.
The bruising is often so widespread on my foot that OH once photographed it so I could show GP, but so much else going on with me that I never bothered! I have mentioned it to several consultants at first appointments where they want history & a comprehensive overview, but no-one has been concerned about it. I thought it probably indicated a clotting issue - I eat a lot of fruit & veg including berries that are high in salicylates & have oily fish, nuts & olive oil in my diet, but as I've eaten that way for decades & the bruising thing only began in peri I thought perhaps associated with the decline in collagen. Incidentally, OH gets what looks like the same thing with his finger joints but not in feet & not as often as me. So maybe just age-related?