The American Academy of Dermatology distinguishes five types of tattoos: traumatic tattoos, also called "natural tattoos", that result from injuries, especially asphalt from road injuries or pencil lead; amateur tattoos; professional tattoos, both via traditional methods and modern tattoo machines; cosmetic tattoos, also known as "permanent makeup"; and medical tattoos.
Some organizations have proposed rules banning sleeves among their members; the United States Marine Corps prohibited Marines from getting arm- or leg-sleeve tattoos after April 1, 2007. Those with sleeves already are protected under a grandfather clause. Nevertheless, tattoo sleeves have become so popular that several clothing companies have produced apparel that simulates the look of tattoo sleeves using transparent mesh fabric printed with tattoo designs.
The Japanese word irezumi means "insertion of ink" and can mean tattoos using tebori, the traditional Japanese hand method, a Western-style machine or any method of tattooing using insertion of ink. The most common word used for traditional Japanese tattoo designs is horimono. Japanese may use the word tattoo to mean non-Japanese styles of tattooing.