Hi,
I'm hoping to pick some brains please!

We've just moved into a flat with a fridge freezer, which works, but on the outside it has a cold patch about the size of the palm of my hand, with condensation on the middle of it, this overlaps an exterior scratch through the white to the metal. It's on the left hand side of the fridge.

I don't mind this visually but I want to be sure it is safe. Could it be some kind of gas leak causing this which might be dangerous, or is it likely to be safe? (I've had headaches since we moved in which I hope is completely unconnected!)

Thanks,
Rachael