im curious about this too as I have a lot of red marks right now and some of them look like they are not even with my skin but almost scar like

Yes, it is possible. I had some lingering hyperpigmentation (as well as actual scars) for over a year after cystic acne and I had originally thought that some spots were scars when they were just slight redness making it appear as a "shadow" on my skin aka indented scar. When the redness was gone, my skin looked much smoother.

Well I think what you can do is get a good concealer that is highly pigmented, but not too cakey, apply it over the red marks and see if there is still a shadow. If it does not cause pitted shadows, then it's just redmarks creating an illusion of depth. If it is pitted, then well you have your answer.