“They are writhing, holding their stomach, complaining of really bad abdominal pain and nausea,” said Sam Wang, a pediatric emergency medicine specialist and toxicologist at Children’s Hospital Colorado [and associate professor of pediatrics], who treats adolescents with the condition. “They vomit and then just continue to vomit whatever they have in their stomach, which can go on for hours,” Wang told CNN in a prior interview. “They often say they took a scalding hot shower before they came to the ER but it didn’t help.”