Mastitis is a condition that occurs in lactating women causing inflammation in the breast tissue. Synonyms for mastitis include breast infection, lactation abscess, and mammary gland inflammation. Breast infection and lactation abscess describe the condition more specifically in terms of the cause of mastitis, which is often an infection. Mammary gland inflammation is a broader term that encompasses all types of inflammation in the glands of the breast. Other related terms include milk fever, caked breast, and blocked ducts, which are all conditions that can contribute to the development of mastitis. It's important for breastfeeding mothers to seek medical attention if they suspect they have mastitis or any related conditions.