Which of the following is an early sign of pit viper envenomation?

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Multiple Choice

Which of the following is an early sign of pit viper envenomation?

Explanation:
Pit viper venom causes immediate local tissue injury at the bite site. Early signs reflect this local damage, with swelling and ecchymosis (bruising) appearing quickly as venom increases vascular permeability and causes bleeding into surrounding tissues. Systemic signs like weakness with diaphoresis, hypoperfusion, or syncope indicate venom spread affecting the whole body and coagulopathy, which tend to develop later. So the earliest clue is swelling at the bite site accompanied by ecchymosis.

Pit viper venom causes immediate local tissue injury at the bite site. Early signs reflect this local damage, with swelling and ecchymosis (bruising) appearing quickly as venom increases vascular permeability and causes bleeding into surrounding tissues. Systemic signs like weakness with diaphoresis, hypoperfusion, or syncope indicate venom spread affecting the whole body and coagulopathy, which tend to develop later. So the earliest clue is swelling at the bite site accompanied by ecchymosis.

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