What are the side effects of Having a tatto?? If there is any...

A tattoo is a mark made by inserting pigment into the skin; in technical terms,tattooing is micro-pigment implantation.Tattoos may be made on human or animal skin. Tattoos on humans are a type of body modification, while tattoos on animals are most commonly used for identification. Because it requires breaking the skin barrier, tattooing may carry health risks, including infection and allergic reactions. Modern western tattooers reduce such risks by following universal precautions, working with single-use items, and sterilizing their equipment after each use. see more details here : http://en.wikipedia.org/wiki/Tattoo#Health_risks