Although the presence of parasitic infection can modify the allergy phenotype, the same is not true for asthma. With regard to asthma, Lynch et al evaluated the effect of regular antihelminthic treatment … Helminth infections may inhibit the development of allergic diseases, including asthma. On the other hand, some helminth species may induce or worsen symptoms of asthma. Some parasites trigger or worsen asthma and allergic symptoms, whereas others tend to reduce the risk of these diseases (21). Ascaris lumbricoides is a gastrointestinal parasite that passages through the … A detailed understanding of how parasites drive allergic inflammation may provide important insights into pathomechanisms and therapeutic targets of allergy and asthma.