My biology teachers have heard of cases o Taenia that got so serious that the body of a kid was so filled with them that the parasites were not only comming out, as normal, from the nose and mouth, but were making holes on the skin itself.
Hm hm hm. Let me say, first off, that I doubt that kid had the Taenia solaris I was talking about, but! - Fun facts!: If that was really the pork tapeworm, that was probably due to multiple infections of Taenia. Once inside the (human) body, the Taenia larva has a very difficult time moving between the digestive tract to the respiratory system. Muscular cysts are common in those infected with Taenia, for the same reason that brain lesions are not unheard of - they're direct stops along the circulatory path, and don't immediately branch into tiny capillaries that transfer gasses to the alveoli.
However, if a kid (or, less often, an adult) ingests the eggs of the parasite incompletely (leaving some in the back of the throat), or while coughing, the worms have been shown to be able to set up shop better in the lung than in the brain. They're able to reproduce there, which is what leads to them being coughed/sneezed out. In the brain and muscles, they're only able to form cysts and wait...and hope that the human dies and a pig eats their flesh. :(