I was recently inspired by the artist Themefinland with a recent work they created, so I decided to do my take on it.Note, there are some unusual circumstances in this image that may leave people feeling mixed.
In scene two, there is some pretty extreme muscle loss. This little variant of the infested actually consumes it's host's innards, leaving nothing but their hide and bones.
The feast allows this little parasite to grow and multiply, soon replacing everything that it consumed with itself, filling that sack of flesh with growing numbers of itself.
Is the Parasite the Host, or is the Host the Parasite? Hard to tell, but they certainly succumb to it's whims rather readily.