Because most spider bites don't fully penetrate human skin, they usually cause only mild reactions. However, black widow and brown recluse spider bites can cause serious reactions and need immediate care. Allergic reactions can happen but are rare.
If your child has been bitten by a spider:
Reviewed by: Steven Dowshen, MD
Date reviewed: April 2014
Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor.