It is also possible for adults to have roundworms inside their stomachs. Roundworms in the stomach are commonly found in ascariasis, which occurs in children, but it is also possible for adults to develop the disease. Ascariasis, which is mainly transmitted through the fecal-oral route, is a common parasite in the human body that is usually milky white and pink in color and parasitizes the upper part of the small intestine and other organs. Adult worms parasitizing the intestines can cause nausea, vomiting, abdominal pain, abdominal distension, often accompanied by loss of appetite, intermittent periumbilical pain, or epigastric cramps. Ascariasis is mainly treated by deworming, followed by the treatment of complications; at present, deworming treatment mostly adopts imidazole drugs, which is a kind of broad-spectrum, high-efficiency and low-toxicity anthelmintic drugs, and commonly used anthelmintics are mebendazole, albendazole and so on. Therefore, adults may also suffer from ascariasis, if the above symptoms need to consult a doctor in time, follow the doctor’s instructions for standardized treatment, do not blindly self-medication.