What are risks of having a plugged duct?

See below: None: most plugged ducts will go away within a couple of days without developing into mastitis, if noticed promptly and treated aggressively. If the milk flows freely through the ducts, bacteria is flushed out and doesn’t have a chance to multiply. Milk that stagnates in the ducts allows bacteria to grow. The first step in treating a plugged duct is to empty your breasts frequently/completely.