Tattoos last, but for 1 out of 10, so does the pain

An estimated 25% of people in the United States have a permanent tattoo, making it one of the most popular forms of body art. But those colorful etchings of birds and symbols can sometimes cause ugly and painful skin problems. A new study suggests that 10% of people who get inked experience infections, itching and other adverse reactions, sometimes lasting more than four months.