According to Refinery 29, You can learn a lot about piercing trends from Instagram. One thing you won't learn on social media are the intimate details like the healing process that takes place all piercings. Piercings can become a serious medical issue if they do not heal properly or become infected. According to L.A.'s most in-demand piercer, Brian Keith Thompson and dermatologist Patricia Wexler, there are some things to be mindful of when getting any part of your body pierced.