Symptoms of ascariasis in adults include Ascaris lumbricoides migrans, intestinal ascariasis symptoms, ectopic ascariasis, and allergic reactions 1. Ascaris migrans: there may be low fever, cough or asthma-like attack when Ascaris migrates to the lungs. There are dry rales in both lungs. 2. Intestinal ascariasis: a few have abdominal pain with periumbilical pressure. Ascaris lumbricoides causes intestinal obstruction, which may be accompanied by abdominal cramps. 3. Heterotopic ascariasis: the common one is biliary ascariasis, which is manifested as pain like drilling the roof. The secretion of roundworm affects the nervous system causing headache and insomnia. 4. Allergic reaction: Ascaris lumbricoides metabolites can cause lung and skin allergy of the host, manifesting as asthma and urticaria. Adults who are infected with roundworms should go to the hospital in time.