Parasitic nematodes are simply one species of worm that inhabits our bodies. They are easily removed with Safeguard Fenbendazole 10% paste for horses and can be purchased at feed stores for animals.
After they are gone, no more worms but many other bugs remain and are hard to be get rid of. It takes at least a few months of treating oneself properly before a clean system is achieved.
Caterpillars are not worms, we have caterpillars!