I think it might actually be meningitis: "Although some people show no symptoms when infected, sometimes it causes a rare type of meningitis (eosinophilic menin

I think it might actually be meningitis: "Although some people show no symptoms when infected, sometimes it causes a rare type of meningitis (eosinophilic meningitis). However, in most cases, the parasite will die over time - humans are not its preferred host."