Doctors at UT Southwestern Medical Center at Dallas say risks include infections, skin reactions and scarring. Infections can occur in the area around the piercing as a result of using non-sterile needles or if the area doesn't remain clean until it heals. Seek medical help if there's redness or swelling around the piercing. Just as some people are sensitive to metals and have to be careful about which earrings they wear, jewelry worn in other piercings can cause skin reactions. If you develop a rash or itching around a piercing, remove the jewelry and see a doctor.
Some people are prone to develop excess scar tissue, called keloids.
African-Americans are especially at risk. If you tend to develop raised, prominent scars, you probably shouldn't be pierced. If you are determined to try body piercing, UT Southwestern doctors say, choose a professional and be sure he or she uses sanitized equipment. Don't do it yourself or share piercing needles with others. Parents should be sure to spread the word about piercing risks to their teen-agers.