A nose piercing bump can be caused by a keloid, a granuloma, tissue damage, and more. An allergy to the metal in your piercing, especially nickel or cobalt, can also cause a bump. A granuloma will ...

An infected belly button piercing causes swelling, pus, fever, chills, and even an upset stomach. If the belly button piercing is infected keep it in and clean the area with antibacterial soap.