Porocephaliasis is a condition associated with species in the closely related genera Porocephalus and Armillifer.
(The term "pentastomiasis" encompasses all diseases of Pentastomida, which includes porocephaliasis and linguatulosis.)
Its occurrence has been rare in Europe and North America where it has been found in immigrants and travelers.
After a while the larvae die within the host and sometimes calcify, leaving characteristic crescent-shaped structures seen in X-ray.
[5] In extreme cases a heavy parasite burden can have serious medical consequences[6] and can even be fatal.