Various helminth species can invade the CNS. The most prominent are:

Helminth	Disease
Cestodes:
Echinococcus	Echinococcosis, hydatid disease
Taenia solium	Taeniasis
Cysticercus (larva)	Cysticercosis
Nematodes:
Angiostrongylus	Eosinophilic meningitis
Strongyloides	Strongyloidiasis
Toxocara	Visceral larva migrans
Trichinella	Trichinosis
Trematodes:
Schistosoma	Schistosomiasis

Data from MJ Aminoff, DA Greenberg, RP Simon. Clinical Neurology. Stamford, CT: Appleton & Lange, 1996;37; and ML Cameron, DT Durack. Helminthic Infections. In WM Scheld, RJ Whitley, DT Durack (eds), Infections of the Central Nervous System. Philadelphia: Lippincott–Raven, 1997;845–878.
Adapted from: Goldstein MA and Harden CL. Infectious states. In: Ettinger AB and Devinsky O, eds. Managing epilepsy and co-existing disorders. Boston: Butterworth-Heinemann; 2002;83-133.
With permission from Elsevier (www.elsevier.com).
Reviewed and revised March 2004 by Steven C. Schachter, MD, epilepsy.com Editorial Board.