Which early symptom is associated with acute radiation syndrome?

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Multiple Choice

Which early symptom is associated with acute radiation syndrome?

Explanation:
Early signs of acute radiation syndrome come from injury to rapidly dividing cells, especially in the GI tract. Nausea and vomiting appear quickly—often within minutes to hours after exposure—reflecting immediate damage to the intestinal lining. This makes it the most distinctive and earliest symptom of ARS. Fatigue is nonspecific and can occur in many conditions, while skin reddening and hair loss occur later, after higher doses and more time for damage to develop. So, the earliest associated symptom is nausea and vomiting.

Early signs of acute radiation syndrome come from injury to rapidly dividing cells, especially in the GI tract. Nausea and vomiting appear quickly—often within minutes to hours after exposure—reflecting immediate damage to the intestinal lining. This makes it the most distinctive and earliest symptom of ARS. Fatigue is nonspecific and can occur in many conditions, while skin reddening and hair loss occur later, after higher doses and more time for damage to develop. So, the earliest associated symptom is nausea and vomiting.

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