BLUE TONGUE SKINKS

Hello!
One of my eastern BTS female has a lot of scales wich are red or pink on the venter and the sides... It seems to be "under the scale" and start on the center of it... I tried to take photos but it's not good...
Is it normal or could it be a disease...?

My Easterns have pink colouration around the vent area, which is normal.

However, for us to decide whether what you describe is normal or a problem, you will have to post photos.

we need photos.

It could be scale rot / blister disease.

In the meantime wiping the areas of concern with a Betadine solution will do no harm.