When children with Kawasaki disease experience vomiting, the first step is to refrain from eating and drinking, including water, for one to two hours after vomiting to avoid burdening the stomach and intestines.

If vomiting subsides after fasting, there is no need for medication temporarily. However, if there is no significant relief and bloating is evident, it is necessary to treat for bowel movement and gas release. At this time, oral medications that aid in digestion, such as digestive tonics, are acceptable. If relief is still not achieved, intravenous fluid supplementation and medications that enhance gastrointestinal motility can be administered. Parents can also keep the abdomen warm and, centering around the navel, perform clockwise abdominal massages to help alleviate the symptoms of vomiting.