An 18-year-old male Japanese soldier was exposed to the Hiroshima atomic bomb near the outside of his barracks, approximately 900 meters from the hypocenter. He sustained third-degree localized burns on the posterior surfaces of his lower legs on both sides. The burns were complicated by typical flesh burns of exposed skin only.

 　An 18-year-old male Japanese soldier was exposed to the Hiroshima atomic bomb near the outside of his barracks, approximately 900 meters from the hypocenter. He sustained third-degree localized burns on the posterior surfaces of his lower legs on both sides. Complicated by typical flesh burns of only exposed skin, the 18-year-old male survivor was in the open air at a barracks approximately 900 meters from the hypocenter of the Hiroshima atomic bomb. The second-degree burns with keloid formation were partially healed. 18-year-old male Hibakusha was treated at the Ujina Branch of the First Hiroshima Army Hospital. He received third-degree burns with keloids a few days after the Hiroshima atomic bomb was dropped and exploded on August 6, 1945.

　This photo was taken in color by the U.S. military on October 24, 79 days after the Hiroshima bomb was dropped and exploded. Immediately after the war ended, the U.S. military confiscated photographic materials on the atomic bomb from Japan to the U.S. mainland. They were subsequently stored at the Armed Forces Institute of Pathology (AFIP) for 28 years. About 20,000 items were returned to Japan in May 1973. The returned materials were divided into three main categories: pathology specimens, autopsy records, and photographs.

  Factors other than ionizing radiation from the atomic bombs, other injuries, filth, foul odors, and psychological factors contributed to seawater damage and vomiting. Symptoms of radiation injury were evidenced by their high incidence within the Hibakusha. The incidence of vomiting among survivors within approximately 1 km of the hypocenter was 35% in Hiroshima and 27% in Nagasaki; for survivors further than 5 km, the incidence was 1% and 2%, respectively. Similarly, anorexia occurred in 48% of survivors within about 1 km in Hiroshima and 37% in Nagasaki. The rates were 7% and 5%, respectively, for survivors living more than about 5 km away.

　The incidence of nausea, vomiting, and anorexia associated with distance from the hypocenter and shielding decreased steadily with distance. The incidence of survivors who were outdoors in the unshielded inner zone was fairly similar to that of survivors who were in heavy buildings. Many of the former may have been behind structures, and those who received heavy doses suffered fatal injuries. Vomiting is less common among survivors in air-raid shelters and tunnels. The incidence was much higher for those who were outdoors or in Japanese-style buildings within about 2 km, and for those in heavy buildings within about 1 km, than for survivors who were further away or in air-raid shelters or tunnels. The incidence of the condition was higher among men than among women, especially in the more heavily exposed cohort. The presence or absence of burns had no significant effect on nausea and vomiting among survivors.