Oh ok. So, there's not a life stage sometimes where they are outside of the body? For some reason, I thought rhabditiform would; leave the body, morph into L3 and find another host/re-enter the same host (in autoinfection) or stay free-living and reproduce parasitic offspring as well. It's all really confusing and I'm finding it difficult to find info on this in particular.
The reason this is such a concern is because it feels like certain specific areas or items of clothing, I come contact with almost immediately increase symptom activity.