| Time After Exposure |
Sublethal Dose |
Lethal Dose |
Supralethal Dose |
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(100-250 rem) |
(250-450 rem) |
(> 650 rem) |
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| First Week |
Nausea and occasional vomiting within hours |
Nausea, vomiting, extreme paleness within a few minutes or hours |
Nausea, vomiting, extreme paleness within a few minutes |
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Shock, unconsciousness, diarrhea, abdominal pains and cramps, fever, severe skin irritation, burns or blisters, insomnia, restlessness |
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Information from FEMA manual. |
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| Second Week |
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Weight loss, general malaise, fatigue, stomatitis |
Death certain (without medical attention) within a few hours to a few days |
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Fever, anorexia, abdominal pains, sever skin irritation |
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| Third Week |
General malaise, anorexia, mild skin irritation, diarrhea, fatigue, drowsiness |
Hair loss, internal bleeding |
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Hair loss |
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| Fourth Week and Later |
Recovery probable |
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Menstrual irregularities in females |
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Changes in blood cells detectable in laboratory |
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%50 chance of death from changes in blood cells if not treated. |
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