radiation sickness

Radiation sickness is a combination of malaise, nausea, loss of appetite, and vomiting occurring several hours after exposure to ionizing radiation in large doses. It occurs as an industrial or war hazard, or more commonly following radiation therapy for cancer, lymphoma, or leukemia. Large doses of radiation may cause bone marrow depression with anemia, agranulocytosis and bleeding, or gastrointestinal disturbance with distension and bloody diarrhea. Skin erythema and ulceration, lung fibrosis, nephritis, and premature arteriosclerosis may follow radiation and malignancy may develop.