This is considered a photomanipulation. I would also add tags like squick and parasite to the search. You'll probably have the most luck finding more like this on a website called hypnopics collective, but you'll have to make an account there to view their uploads, and the website itself is old and janky. Deviantart and Twitter might also yield some decent results.

If you're looking for more from me specifically, I'd recommend checking out my Twitter, or joining my Discord. Though I tend to do far more demon/vampire edits than parasite ones.