Strongyloidiasis: An Emerging Infectious Disease That Simulates Allergic Diseases

is an intestinal parasitic nematode that is present around the world and endemic in rural areas with tropical or subtropical climates [1]. In Spain, cases of infection have been described along the Mediterranean coast [2], in Zaragoza [3], and in southern Galicia [4]. A risk factor for infection in our country is agricultural work in wetlands or rice fi elds [2]. We present the case of a nonsmoking 27-year-old man of Bolivian origin who reported nonseasonal symptoms of 1-year duration consisting of expectoration that caused coughing every morning but was nonproductive throughout the rest of the day. He also experienced episodes of exacerbated symptoms with an intensely itchy throat and a feeling of mucus in the throat, although he reported that it primarily produced saliva. There was no fever. He was referred to our department to rule out an allergic cause.Laboratory tests showed a total immunoglobulin (Ig) E level of 5000 kU/L and eosinophilia (700 cells/μL); serum determinations of speci fi c IgE antibodies were positive for dust mites (