Because it requires breaking the skin barrier, tattooing carries health risks including infection and allergic reactions. Tattooing can be uncomfortable to excruciating depending on the area and can result in the person fainting. Modern tattooists reduce risks by following universal precautions working with single-use items and sterilizing their equipment after each use. Many jurisdictions require that tattooists have blood-borne pathogen training such as that provided through the Red Cross and OSHA. As of 2009 (in the United States) there have been no reported cases of HIV contracted from tattoos.
The length of an arm provides an incredible canvas for a tattooist. They have a lot of space to work with, and it gives them the opportunity to explore complex imagery that reads like a story on the skin. Or if they prefer abstraction, sleeves are the chance to create a collision of patterns. The conceptual possibilities are endless. Some artists completely cover the skin, like Little Andy who transformed the lower half of his client’s arm into a swirling galaxy. But for those that favor the minimalist approach, La Malafede showcases the impact of a single line as it traces the inside of the whole arm.
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.
Tattooing involves the placement of pigment into the skin's dermis, the layer of dermal tissue underlying the epidermis. After initial injection, pigment is dispersed throughout a homogenized damaged layer down through the epidermis and upper dermis, in both of which the presence of foreign material activates the immune system's phagocytes to engulf the pigment particles. As healing proceeds, the damaged epidermis flakes away (eliminating surface pigment) while deeper in the skin granulation tissue forms, which is later converted to connective tissue by collagen growth. This mends the upper dermis, where pigment remains trapped within successive generations of macrophages, ultimately concentrating in a layer just below the dermis/epidermis boundary. Its presence there is stable, but in the long term (decades) the pigment tends to migrate deeper into the dermis, accounting for the degraded detail of old tattoos.
Full Sleeve Warrior Tattoos – The warrior full sleeve design may present the pictures of warriors and weapons, engaged in conflicts and wars. Such a tattoo design reflects sheer power and strength. Other designs may include elements such as hearts, dreamcatchers, feathers, arrow, and skulls. Clock, compass, geometric, anchor, musical symbols and angels are some other common things used in such a design. One can have as many of them included in tattoo sleeves design as he wants, but it has to be discussed with the designers, right from the beginning stages of the tattoo, so that he can plan the design accordingly.
Tattoos were probably also used in ancient medicine as part of the treatment of the patient. In 1898, Daniel Fouquet, a medical doctor, wrote an article on “medical tattooing” practices in Ancient Egypt, in which he describes the tattooed markings on the female mummies found at the Deir el-Bahari site. He speculated that the tattoos and other scarifications observed on the bodies may have served a medicinal or therapeutic purpose: "The examination of these scars, some white, others blue, leaves in no doubt that they are not, in essence, ornament, but an established treatment for a condition of the pelvis, very probably chronic pelvic peritonitis."
Mainstream art galleries hold exhibitions of both conventional and custom tattoo designs, such as Beyond Skin, at the Museum of Croydon. Copyrighted tattoo designs that are mass-produced and sent to tattoo artists are known as "flash", a notable instance of industrial design. Flash sheets are prominently displayed in many tattoo parlors for the purpose of providing both inspiration and ready-made tattoo images to customers.