Larva migrans is a group of clinical syndromes that result from the movement of parasite larvae through host tissues. The symptoms vary with the location and extent of the migration. Organisms may travel through the skin (cutaneous larva migrans) or internal organs (visceral larva migrans). Some larvae invade the eye (ocular larva migrans). Each form of the disease can be caused by a number of organisms. The syndromes are loosely defined and the list of causative agents varies with the author.