The venom contains a toxin that affects the nervous system. Symptoms Occur within 30 minutes to 2 hours after the bite. Your child may complain of severe back pain and muscle cramps, a rigid sensation in her abdomen, nausea, vomiting, sweating, restlessness and, in some cases, elevated blood pressure. The maximum effect usually occurs 3 hours after the bite, but in severe cases, pain may persist for several days. Fatalities are extremely rare.
Most people recover completely, as long as they obtain treatment.
Treatment Includes muscle relaxants, fluids, tetanus shots and other measures. More prevalent on the East Coast than the Black Widow. Its bites tend to cause more serious effects. The venom of the Brown Recluse contains chemicals which cause severe tissue damage. Symptoms A bite by a Brown Recluse is initially painless.