Perhaps the medicals are trying to figure out how to actually deal with this. Until then the word is mum, denial, yur crazy. Accurate testing at special labs cost $1000 a hit. The medicines available are prone to parasite resistance just like anti biotics.
If they admit reality of parasites in modern society then people will freak out and overwhelm the medical system. They might even have to employ alternative medicine due to parasite resistant drugs.
So while they figure out how to deal with this comming medical problem,you just a loony tune with nothing else to do but bother them about things moving around inside your head and toes....isnt that what crazy people do after all.