Spontaneous Haematomas

Over the past 6 months or so, I have noticed I'm getting a lot of haematomas suddenly appearing on my body. They are mainly on my hands and feet, and occur with very minimal trauma.

I have got them from stepping lightly onto the ground (bad one on side of middle toe), turning on a tap (palm of hand), doing nothing (between knuckles on back of hand, inside elbow), etc.  I sat on the carpet once with my feet folded under me, something I've done hundreds of times before, and got quite a big one on the top of my foot.  I also got a very painful one inside my finger joint from pulling my suitcase around the airport for about a minute, it's on wheels and didn't feel like any trauma was done. Had pulled it ten minutes uphill later in my holiday when it was much heavier without incident.  They are often right over a joint, and I've also had a lot more joint pain generally lately.

I usually feel a sharp, quite intense pain, and then the area under the skin starts rapidly filling with blood.  They disappear in a day or so, but they are a little worrying, especially when I tell other people and they are shocked.

I've always bruised really easily, but this seems different.  Usually the unexplained bruises I get, don't hurt at the time they appear, I find them later and wonder about them and then they only hurt when I touch them.  They also don't appear before my eyes like the haematomas.

My platelet count is fine.  I haven't had a coag screen for a while, but that has always been normal in the past, though I guess that was before this problem.  Guess I should go to my GP next time I get a chance.

I've been reading about Achenbach syndrome lately, and this seems to explain the hand haematomas, but what about the elbows and feet?

Anyone experienced this before?