Which is an early sign of pit viper envenomation?

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Multiple Choice

Which is an early sign of pit viper envenomation?

Explanation:
Early tissue effects from pit viper venom produce local swelling and ecchymosis at the bite site. The venom contains cytotoxic components that damage surrounding tissue and small blood vessels, causing fluid and blood to leak into the area right away. This local reaction often appears before systemic effects, so swelling and bruising around the bite are the first noticeable signs. In contrast, general weakness, sweating, signs of poor perfusion, or fainting with distal bleeding reflect systemic involvement or late-stage problems and are not the earliest clues.

Early tissue effects from pit viper venom produce local swelling and ecchymosis at the bite site. The venom contains cytotoxic components that damage surrounding tissue and small blood vessels, causing fluid and blood to leak into the area right away. This local reaction often appears before systemic effects, so swelling and bruising around the bite are the first noticeable signs. In contrast, general weakness, sweating, signs of poor perfusion, or fainting with distal bleeding reflect systemic involvement or late-stage problems and are not the earliest clues.

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