There was a new one recently.
The White House explains this one as Trump having bumped himself at the Resolute desk
The most likely scenario for constant bruising of Trumps’ hands is he’s on anticoagulant medication (blood thinners), way in excess of 375 mg of Aspirin Trump claimed he’s taking. It looks like Trump is taking a Vitamin K antagonist in order to prevent blood clots. It wouldn’t be uncommon in someone his age and suggests he’s at high risk of stroke. However this is just one component of the explanation, anticoagulant medication isn’t supposed to be severe enough to cause bruising at the rate we see with Trump. He likely is on anticoagulant medication, but you need something else as well.
Most plausibly it’s getting regular IVs through his hands. This particular bruse does look trauma related, but the locations of some of the previous bruises look consistent with having recieved an IV in that hand. This would imply Trump is having something pumped directly into his bloodstream every now and then, perhaps on a weekly basis or so. This to suggests less than optimal health, to put it mildly.
The last public photo of Queen Elizabeth II
Look at the hand of Queen Elizabeth II above, it too shows a very sizeable bruise. Knowing she died two days later means it’s very likely this one too was from an IV. The queen was given intravenous medicine to make her able to stand up for a photo, recieve the new Prime Minister and give her advice as her last act of queenhood. Trump is not in as bad a shape, but I find it at least plausible he too recieves stuff this way to be able to stand up and pretend to be active for 2–3 hours a day.
Trump belongs in a nursing home. One with very thick bars on windows and no internet, prefferably.