There is no such thing as seven major symptoms of roundworms in the belly of adults. The common symptoms of roundworm disease in adults include emaciation, visible adult worms in the feces, and allergies. 1. Wasting: adult worms are parasitized in the intestines and feed on semi-digested food in the intestinal lumen. They will compete with the human body for nutrients. In mild cases, there are no symptoms, but a large number of roundworm infections can cause lack of appetite or malnutrition, resulting in wasting and other symptoms. 2. Adult roundworms can be seen in the feces: if there are more roundworms in the intestines, sometimes roundworms will be vomited or discharged in the feces. 3. Allergy: the heterogeneous protein secreted by the worms may also cause allergic reactions, such as urticaria. When roundworm disease occurs, it is recommended to consult a doctor in time, follow the doctor’s instructions for further examination and targeted treatment with the help of the doctor.