Infections often occur while the piercing is very fresh. Microorganisms, such as fungi and bacteria, attempt to invade the body and cause infection. The body reacts and attempts to fight off the infection by surrounding it with white blood cells. Often there is increased swelling and redness and the piercing will be sore to the touch and a thick discharge of grey, brown, or green puss will excrete from the site of the piercing. Compresses can help, if used early on.
If the infection is left unchecked, then the piercee may need anti-biotic treatment.