Pom Pom Crab anemone stings

[Moogled]

Has anyone had experience with pom pom crabs stinging fish with their nems?

What does it look like?

My Lubbocks wrasse has been in the tank for a couple days but suddenly developed a couple of white patches on his face, almost like "bleach" marks. They are not dots so it doesn't seem to be Ich but I could be wrong.

He shares a cave with a pom pom crab so I was thinking that maybe he took a pimp slap to the face when he got too close. Other than that I'm not sure if it's just an injury or something else.

I've been unable to get clear photos as this guy swims around pretty quick.

Any thoughts?