People are flocking to tattoo parlors to get large swathes of their skin covered in black ink— an emerging trend dubbed “blackout tattoos” on social media. In photos posted on Instagram, people are showing off their tattoos, which cover everything from the chest and arms to the legs, often deceptively appearing to be fabric sweaters or leggings.

Like all tattoos, large tattoos like these run the risk of infection from the needle itself or the actual tattoo ink, said Dr. Eric Schweiger, founder of Schweiger Dermatology Group in New York City. “The healing can also be delayed in large tattoos, which makes scarring more likely,” he told via email. READ MORE