An Anaphylactoid Reaction to Rattlesnake Envenomation in a Pediatric Patient

Area of Science:

• Toxicology
• Allergy and Immunology
• Pediatric Emergency Medicine

Background:

• Rattlesnake envenomation presents with diverse symptoms, often mimicking anaphylaxis.
• Airway compromise post-extremity snakebite is uncommon, typically linked to prior venom sensitization.
• Pediatric cases of anaphylactoid reactions to rattlesnake bites without prior exposure are undocumented.

Observation:

• A 14-year-old male with no history of snake contact presented to the emergency department.
• The patient exhibited signs and symptoms consistent with an anaphylactoid reaction.
• The reaction occurred shortly after a reported rattlesnake bite to an extremity.

Findings:

• The patient experienced an anaphylactoid reaction following a rattlesnake bite.
• This reaction developed despite the absence of any known prior snake or venom exposure.
• The case represents a rare pediatric presentation of rattlesnake envenomation without sensitization.

Implications:

• This case expands the understanding of potential reactions to rattlesnake venom, particularly in pediatric populations.
• It underscores the importance of considering envenomation in the differential diagnosis of anaphylactoid reactions, even without a clear history of exposure.
• Further research may be warranted to explore the mechanisms of venom-induced anaphylactoid reactions in the absence of sensitization.