A 70-year-old man who had been diagnosed as having anaphylactoid purpura during a first episode was admitted to our hospital. Anemia and hemorrhagic diarrhea were also observed at the same time as the purpura appeared, and gastrointestinal examination was requested. Upper gastrointestinal endoscopy revealed ulcer accompanied by bleeding and erosive lesions, mainly in the lower duodenum. Endoscopic examination of the lower gastrointestinal tract revealed ulcers accompanying bleeding and erosive lesions throughout the entire colon. On the other hand, no lesion was evident when capsule endoscopy was performed to examine the small intestine. We initiated steroid therapy and improvement of the abdominal symptoms was observed. Upper and lower endoscopy was performed again after treatment, and showed that the gastrointestinal lesions had improved. In this case, gastrointestinal bleeding was combined with the incipient anaphylactoid purpura. This case is valuable in that gastrointestinal endoscopy was able to confirm the lesions and improvement after treatment. We will report on this in consideration of the relevant literature.
