Not a Dark Mark ?

[houyhnhnm102]

No: HPFGUIDX 140828

Ceridwen:
> 
> Draco doesn't change, he perhaps 
> gets a taste for more red meat but that's about it, and permanent 
> scarring.

houyhnhnm:

He sure doesn't look like he has a taste for red meat throughout most
of HBP.  He is increasingly sickly and anemic looking. He has "a
distinctly grayish tinge to his skin", "dark shadows under his eyes".
 He seems to be losing weight (though I can't find the exact
quote--maybe it was just in my own imagination.)  It really sounds
like he wasn't getting enough red meat.