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Severe Bushmaster Snakebite Envenoming: Case Report and Overview.

Allan Quadros Garcês-Filho1, Humberto H M Santos1, Thays K P P Aguiar1

  • 1Medical School, Federal University of Roraima, Boa Vista 69300-000, Roraima, Brazil.

Reports (MDPI)
|July 29, 2025
PubMed
Summary

Lachetic envenoming from bushmaster snakes is rare in Brazil, causing diagnostic challenges. This case highlights delayed treatment and severe outcomes, emphasizing the need for better understanding and optimized strategies for Lachesis muta bites.

Keywords:
LachesisRoraimaamputationinfectionsnakebite envenoming

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Area of Science:

  • Toxicology
  • Herpetology

Background:

  • Snakebite envenomings in Brazil are commonly attributed to Bothrops and Crotalus species.
  • Lachesis envenomations, though rare, pose significant diagnostic and therapeutic challenges.

Observation:

  • A 26-year-old man experienced severe envenoming after a Lachesis muta bite.
  • Initial misdiagnosis as a bothropic bite led to delayed antivenom administration.
  • Characteristic symptoms included sweating and bradycardia, suggestive of lachetic envenoming.

Findings:

  • Despite eventual correct treatment, the patient suffered a finger amputation and a severe infection.
  • The rarity of Lachesis spp. bites complicates accurate and timely diagnosis.
  • Key signs and symptoms of lachetic envenoming were observed.

Implications:

  • This case underscores the diagnostic difficulties associated with rare Lachesis envenomings.
  • Further case reports are crucial for improving the understanding and management of Lachesis muta envenomation.
  • Optimizing treatment strategies for bushmaster snakebites requires increased clinical data.