Every little thing I do seems to scar, even superficial cuts that don't even need a plaster or my attention. They hang around forever: I have scars from my childhood from cuts so minor I didn't even stop what I was doing or tell anyone - e.g. caught my arm very lightly on a sharp tile at the swimming baths, it was minor enough to carry on swimming, yet still have the scar.
Is this usual and what can I do about it? I've got an ugly new scar forming (mishap with a broken plate about a month ago) and want to minimise it if I can.