What is one of the signs of acute radiation sickness?

Nausea and vomiting are hallmark symptoms of acute radiation sickness, which can occur after exposure to high doses of radiation over a short period. This reaction is part of the body's response to the damage caused to the cells lining the gastrointestinal tract, which are particularly sensitive to ionizing radiation. The presence of nausea and vomiting typically occurs within hours to days after exposure, making it a key indicator for assessing potential radiation injury. Understanding this symptom is crucial for identifying and managing acute radiation sickness and ensuring proper medical intervention. Other symptoms may appear as well, but the immediate onset of nausea and vomiting is widely recognized as a critical sign in diagnosing this condition.