I was medically diagnosed positive only last month (a year on from that post!) by blood ELISA for Gnathostomiasis (after having specific blood tests done for practically every other worm in existence!).
This would make sense as Gnathostomiasis shows both subcutaneous larva migrans and visceral larva migrans-like symptoms. It also happens to be the most motile of any human parasite and one that migrates faster than any other any has spikes near it's mouth allowing it to essentially burrow absolutely anywhere it wants in the body.
I've taken oodles more Albendazole and Ivermectin and have slowly improved. Just finished anothersolid 3 week Albendazole course and came out in a lot more boils (a good sign), and definitely improved more, but still not rid of all. I seem to have been infested with hundreds and hundreds of these things. I guess time will tell when I get rid of them completely...