Sprinkles

I have a few spots in tattoos that kinda look this way, often in light blue. I was talking with an artist about it and they said it often happens when you mix white in to lighten a color and then the white discolors (which we all know happens). Nothing you can do, but honestly it doesn’t look bad. I wouldn’t sweat it. As your tattoo ages you won’t notice every little imperfection anyhow. 

yep, the background and teeth, too. that's a strange one . . . have you asked the artist about it?