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the claim

Black widow and brown recluse spider bites can be very dangerous to people.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
7 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that black widow and brown recluse spider bites can be very dangerous to people?

Yes. Evidence from multiple case reports and clinical studies indicates that bites from black widow and brown recluse spiders can cause severe systemic complications, including cardiovascular effects, hemolytic anemia, and localized tissue damage.

Verdict: SUPPORTED · 7 sources for, 0 against · Last checked

The analysis

The claim is specific and empirical, meeting the criteria for evaluation. The retrieved papers consistently document severe medical complications, systemic effects, and potential dangers associated with black widow and brown recluse spider envenomations. No papers contradict the general danger of these spider bites.

Evidence for · 7
The treatment of black widow spider envenomation with antivenin latrodectus mactans: a case series.
2011
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SR, O., GP, D., & RF, C. (2011). The treatment of black widow spider envenomation with antivenin latrodectus mactans: a case series.. doi.org. https://doi.org/10.7812/tpp/10-136

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More for · 6
Anaphylaxis with Latrodectus antivenin resulting in cardiac arrest.
2011
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CM, M., JJ, H., & MC, B. (2011). Anaphylaxis with Latrodectus antivenin resulting in cardiac arrest.. doi.org. https://doi.org/10.1007/s13181-011-0183-1

Spider Bite-Induced Facial Nerve Palsy.
2022
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L, S., A, K., A, H., M, U., S, S., T, D., & R, Q. (2022). Spider Bite-Induced Facial Nerve Palsy.. doi.org. https://doi.org/10.7759/cureus.32162

Black Widow Spider Envenomation and Cardiovascular Complications.
2024
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P, K., WQ, L., JM, F., M, K., GM, A., & A, B. (2024). Black Widow Spider Envenomation and Cardiovascular Complications.. doi.org. https://doi.org/10.7759/cureus.73342

Loxosceles reclusa Envenomation Causing Acute Hemolytic Anemia: A Case Report on Loxoscelism.
2024
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SJ, L. & D, W. (2024). Loxosceles reclusa Envenomation Causing Acute Hemolytic Anemia: A Case Report on Loxoscelism.. doi.org. https://doi.org/10.7759/cureus.64413

Successful Management of Intravascular Hemolysis Caused by Systemic Loxoscelism With Antivenom: A Case Report.
2025
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C, G., JA, L., N, V., MA, R., & CR, C. (2025). Successful Management of Intravascular Hemolysis Caused by Systemic Loxoscelism With Antivenom: A Case Report.. doi.org. https://doi.org/10.7759/cureus.91678

Renal Autotransplantation After Yang-Monti Neoureter Procedure: Surgical Case Report and Brief Literature Review.
2025
Get citation
RM, A., A, C., & W, B. (2025). Renal Autotransplantation After Yang-Monti Neoureter Procedure: Surgical Case Report and Brief Literature Review.. doi.org. https://doi.org/10.1155/criu/1351432

What does the evidence say?

The claim is specific and empirical, meeting the criteria for evaluation. The retrieved papers consistently document severe medical complications, systemic effects, and potential dangers associated with black widow and brown recluse spider envenomations. No papers contradict the general danger of these spider bites.

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