A worm in a child’s stomach generally refers to an infection with roundworms inside the child’s stomach. Roundworms are a relatively common parasite, and the symptoms that children show after infection are relatively obvious, such as abdominal pain, worm spots on the face, daytime weight loss, diarrhea, lack of energy, grinding teeth, drooling, night terrors, irritability, and many other symptoms. If a child has roundworms in the stomach, one of the most common symptoms is abdominal pain, which occurs repeatedly and irregularly around the belly button or abdomen for varying durations, but gets better after rubbing and pressing. If a child has roundworms in the stomach, there is a possibility of round or oval white spots on the face and neck, which are commonly referred to as worm spots. However, the presence of white spots does not necessarily mean that roundworm disease is present. Since roundworms absorb the child’s nutrition, if a child has roundworms in the stomach, he or she will lose weight and will not gain weight even if he or she has a good appetite, and will also suffer from malnutrition, which will cause depression, teeth grinding or waking up at night. In addition, some children with roundworms in their stomachs may experience mild diarrhea, nausea and vomiting, irritability and many other symptoms. Although children with roundworms in their stomachs may not always show all of the above symptoms, there are always 2-3 symptoms that show up, so adults who find children with these symptoms need to go to the hospital for a routine stool examination to see if there is a roundworm infection and treat it in a timely manner.