“…It has been considered that abdominal involvement, including pain, nausea, vomiting and/or gastrointestinal bleeding, occurs in more than half of patients affected with HSP [3,9]. The small intestine is the most frequently involved part in the gastrointestinal tract, presumably due to its predilection to ischemic injury [3], while the second portion of the duodenum, as well as the stomach, terminal ileum and colon, are often affected [3,[11][12][13][14]. Of note, abdominal symptoms precede purpuric lesions by several days in 12-19 % of patients with HSP [3,4,[9][10][11], posing diagnostic challenges to physicians.…”