Babies with roundworm disease may have itchy skin and hives on the neck. The clinical manifestations of roundworm infection vary depending on the parasitic site and developmental stage of the worms. The larvae of Ascaris lumbricoides parasitize the human body and can act as sensitizers leading to symptoms of skin allergy, which can lead to localized hives, itchy skin, fever, etc. in the neck, and if the larvae reach the lungs, they can also cause coughing and sputum, or even lead to chest pains and respiratory difficulties. Adult Ascaris lumbricoides are often parasitic in the intestines, causing abdominal pain, loss of appetite, diarrhea, constipation and other symptoms. In addition to the possible clinical manifestations in the neck, babies suffering from ascariasis may also show the above systemic manifestations. Parents should pay attention to observation and bring their children to the hospital as soon as possible for deworming treatment.