Brown recluse spider bite

About Brown recluse spider bite

The bite is poisonous causing pain, and ulceration at the site. The scientific name for the brown recluse is Loxosceles reclusa. In the United States, this spider is most commonly found in the South and Central states. The spider has been found in several large cities outside this range and prefers dark, sheltered areas. The spiders have a characteristic violin pattern on the back of the body part to which the legs attach (cephalothorax), and the base of the violin is oriented toward the head of the spider. They are 1/4 to 1/2 inch in size and yellowish-tan to dark brown in color.

Symptoms

Fever, chills, itching, fatigue, reddish or purplish color in a circle around bite, sweating, ulcer in the area of the bite, coma, blood in urine, jaundice, kidney failure, seizure.

Tests & Diagnostics

A history and physical exam will be performed. Identification of the spider if possible.

Conventional treatment summary

Depends of symptoms but may include local wound care to the bite site and treatment of any serious symptoms. Antibiotics are used if the wound is infected. For more information and help call your local poison center at 1-800-222-1222.

Medical specialties

Medical Toxicology

This page is educational content, not medical advice. Always consult a qualified clinician for diagnosis and treatment of Brown recluse spider bite.