According to About.com, identifying a spider bite is sometimes impossible. Local reactions to spider bites, such as redness, pain, itching and swelling, look the same as reactions to bites from other toxic insects. Victims who suspect they have been bitten by a spider should become concerned if the local reaction continues to get worse after a period of 24 hours.Continue Reading
Redness that spreads away from the bite, a discoloration surrounding the bite that looks similar to a bull's-eye and drainage from the bite are signs that can indicate a potentially dangerous spider bite.
Brown recluse spiders and black widow spiders have bites that cause a systemic reaction affecting the entire body. About.com advises looking for symptoms such as headache, chills, sweating, stomach cramps, leg cramps, body aches, exhaustion and rapid pulse. A bite victim who begins feeling extremely weak or tired should seek immediate medical assistance. Systemic reactions to bug bites must be treated by a medical staff in an emergency facility.
Anaphylaxis, which is a severe allergic reaction, is the biggest concern after a bug bite, explains About.com. A person with post-bite symptoms such as wheezing, shortness of breath or hives should call 911 for emergency care.Learn more about Pest Control