Spider Bite Severity and Antivenom in Brazil (Phoneutria, Loxosceles)
Classes a spider bite in Brazil and gives the vials.
Open the tool → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Spider
- Loxosceles (brown spider, aranha-marrom)
- Moderate signs
- Yes
- Severe signs
- No
- Adult or child
- Child
- Child weight in kg
- 20
Result: Moderate Loxosceles bite (suggestive or typical lesion, nonspecific systemic signs, no hemolysis): 5 vials of SALox (or SAAr), plus prednisone.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Spider
- Moderate signs (Phoneutria: intense pain, sweating, vomiting, agitation, high BP; Loxosceles: typical lesion with rash or fever)
- Severe signs (Phoneutria: profuse sweating, drooling, priapism, shock, pulmonary edema; Loxosceles: hemolysis)
- Adult or child (for prednisone)
- Child weight in kg
How this is calculated
Citation
Brasil, Ministério da Saúde. Guia de Vigilância em Saúde. 6th ed. revised, vol. 3. Brasília; 2024. Araneísmo and Quadro 4 (p. 1141). Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.