It is caused by the intradermal migration of strongyloides and distinguished from cutaneous larva migrans (caused by hookworm) by its rapid migration, perianal involvement and wide band of urticaria.[4]
^Ren, Melody; Boggild, Andrea K. (2021). "Strongyloidiasis". In Weatherhead, Jill E. (ed.). Neglected Tropical Diseases - North America. Switzerland: Springer. pp. 35–36. ISBN978-3-030-63384-4.