I used to work for a people dermatologist. Very often the darkening of the area happens for us too. I'm pretty sure that the pigment will lighten back up, but it could take a looong time. It's kind of like when we have a bad scratch or burn. Almost like scar tissue as it's a different color, but it should return to normal over the next 6-12 months, that is, if he didn't scratch it to the point of scarring. Wish I could be more help. Glad he's not scratching as much. There have been lots of dog baby allergies this year.
__________________ ~Paula~ proud mommy of
~Otis  (yorkie) & Oliver  (shih-poo) |