Eric "Lizardman" Sprague, 38, a performance artist in Austin, Texas, has gone a long way to emulate his favorite beast. In addition to having his teeth filed into fangs, he's undergone piercings, tattoos, and tongue bifurcation. He's even had five ridges implanted over each eye, according to his website
But doctors say subdermal implants, like the ridges above his eyes, can be risky business. "Hopefully all of this is being done under the most sterile conditions," says Dr. David Bank, director of The Center for Dermatology, Cosmetic, and Laser Surgery in New York. Anytime the skin is opened up, he tells CBS News, there is the potential for infection - and the risk is heightened when a permanent foreign object is introduced.