Toxic reaction to insect or spider venom

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Toxic reaction to insect or spider venom

A toxic reaction occurs when insect or spider venom acts like a poison in the body. This type of reaction can occur from one bite or sting from a highly toxic insect or spider, or from multiple bites or stings from insects or spiders not normally considered poisonous.

Symptoms of a toxic reaction vary depending on the insect or spider, the toxicity of the venom, and the amount of venom injected. Most often symptoms lessen or go away within 48 hours. Although hives and difficulty breathing may occur in an allergic reaction, these symptoms will not occur in a toxic reaction. It is possible to have both a toxic reaction and an allergic reaction at the same time.

Signs and symptoms of a toxic reaction may include:

Nausea or vomiting.
Diarrhea.
Fever.
Weakness.
Lightheadedness.
Rapid swelling at the site of the sting.
Muscle spasms.
Headache.
Drowsiness.
Fainting (syncope).
Uncontrollable jerking movements (seizures).

A toxic reaction may lead to heart rhythm problems, shock, and death.

Credits

Author	Colleen Cronin
Editor	Susan Van Houten, RN, BSN, MBA
Associate Editor	Terrina Vail
Primary Medical Reviewer	Kathleen Romito, MD - Family Medicine
Specialist Medical Reviewer	Harold S. Nelson, MD - Allergy and Immunology
Last Updated	February 1, 2006

Last updated:	February 01, 2006
Author:	Colleen Cronin
Reviewed By:	Kathleen Romito, MD - Family Medicine, Harold S. Nelson, MD - Allergy and Immunology
Editors:	Susan Van Houten, RN, BSN, MBA, Terrina Vail

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