Another curse scar?

[Hitesh]

No: HPFGUIDX 96284

I wonder if this has come up before, but here I go anyway. In GoF,
(Bloomsbury paperback edition, chapter 36, pages 612-613),in midst of
his confrontation with Dumbledore and Harry, we have a curious
statement from Fudge.

<Quote>

Fudge had taken half a step back from Dumbledore, but he looked no
less stubborn. 'You will forgive me, Dumbledore, but I've heard of a
curse scar acting as an alarm bell before...'

<End Quote>

It is obvious from the context that he is not talking of Harry's scar.
Is there some other scar in the canon that I can't recollect right
now? And if it is indeed a clue to some mystery, my inference is that
there was some other scar in the past. Dumbledore believed it to be a
secret connection to some evil person and was proved wrong. 

Anyone who can shed light on this? Thanks.