Mastitis is a medical condition characterized by the inflammation of the breast which causes it to be painful, red and swollen. There are two main types of mastitis: Non-Infectious Mastitis and Infectious Mastitis. Non-infectious mastitis is usually caused by the blockage of the milk duct due to remaining breast milk during breastfeeding (milk stasis). This type of mastitis, also known as lactation mastitis, is common in women who are breastfeeding. Infectious mastitis is caused by bacteria infection, usually by common bacteria known as Staphylococcus aureus, that enters the breast through a break or crack on the nipple. Non-infectious mastitis usually does not require treatment, and can be treated with self-care techniques, such as drinking plenty of water, wear loose fitting clothes and placing a warm cloth over the breast to relieve the pain. Continual breastfeeding should be done to prevent further blockage of the milk ducts. Infectious mastitis can be treated easily with antibiotics.