Bright red bruises on arms.

I get lots of these, often on the back of my hands. I have a purple one right now. They used to worry me but I've had so many now that I've stopped worrying.

Crossed posts Elowen. Must be right.

Think they are called Senile Purpura or something like that.

They are Senile Purpura, caused by thinning skin in old age.

I get bright red marks on my arms as well, which gradually fade. I don't think they are bruises, as I also get the normal colour bruises. My skin is very thin and dry due to age and sun damage and I think the red marks are part of the same process.

Are they actually bruises?
Do they go purple/yellow ?

Are you taking aspirin or anticoagulants or other medication that might cause this?