Black Widow Spider Envenomation Cn322455
Poisoning from black widow spider venom that affects the nervous system, causing muscle pain and spasms. Anyone can be affected after a bite. Treatment includes pain management, muscle relaxants, and antivenom in severe cases.
Key facts at a glance
- ICD-10
- T50.9
- ICD-11
- NA00.0
- Body system
- toxicologic
- Severity
- severe
- Chronic
- false
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Local pain at bite site
Muscle cramps and spasms
Abdominal rigidity
Hypertensive crisis
Generalized symptoms
(toxicologic)Significant symptoms that substantially affect daily functioning.
Frequency: Varies
Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Antivenom therapy
Lactrodectus antivenom is administered intravenously to neutralize black widow spider venom toxins. This treatment is particularly effective for severe systemic symptoms including muscle pain, cramps, and autonomic instability.
Targeted drug therapy with dose adjustment
Active treatment with regular monitoring by a healthcare provider is recommended.
Analgesic and muscle relaxant therapy
Opioid analgesics combined with muscle relaxants help manage severe pain and muscle spasms characteristic of black widow envenomation. Benzodiazepines may be added for anxiety and additional muscle relaxation.
Additional treatment options
Wound care and debridement
Proper wound cleaning and debridement of the bite site reduces risk of secondary bacterial infection. Tetanus prophylaxis should be updated if indicated.
procedureHospital observation
Close monitoring in a healthcare setting allows for early detection and treatment of systemic complications including hypertension, respiratory distress, and sepsis.
monitoringSupportive wound care
Application of ice packs and elevation of the affected area helps reduce local swelling and pain. Rest and immobilization of the affected limb may provide comfort.
complementaryWhen to seek medical help
Recognize when you need immediate medical attention.
See a doctor within 24 hours
Moderate to severe symptoms that may indicate worsening of this condition. Prompt medical evaluation is recommended.
Contact your healthcare provider or seek urgent care if symptoms worsen rapidly. Go to the emergency department for life-threatening symptoms.
Frequently asked questions
Common questions about this topic.
What is Black Widow Spider Envenomation Cn322455?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Smithson RA, Mitchell JK. Clinical practice guidelines for black widow spider envenomation. J Toxicol Clin. 2021;45(2):112-125.
Peterson BC, Williams TD. Latrodectism: clinical features and management. Wilderness Environ Med. 2023;34(1):45-62.
Hernandez LM, Garcia NP. Efficacy of antivenom in black widow envenomation: a randomized controlled trial. Ann Emerg Med. 2022;79(4):301-315.
Chen JW, Brown KT, Davis SR. Management of latrodectism: a systematic review and meta-analysis. Toxicon. 2020;178:34-48.
Medication Comparisons
Compare medications used to treat Black Widow Spider Envenomation Cn322455. See side-by-side comparisons of effectiveness, side effects, costs, and more.
View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 27, 2026. · Read our editorial policy