Final answer:
A plugged milk duct is caused by a blockage in one of the milk ducts, while mastitis is an infection of the breast tissue. An abscess is a collection of pus that can develop as a complication of mastitis.
Step-by-step explanation:
Plugged Milk Duct:
A plugged milk duct occurs when one of the milk ducts in the breast becomes blocked, preventing milk from flowing freely. This is commonly caused by a buildup of milk, which can happen if the baby is not feeding well or if the breast is not fully emptied during breastfeeding. Symptoms of a plugged milk duct include a tender lump or area in the breast, redness, and pain.
Mastitis:
Mastitis is an infection of the breast tissue that typically occurs during breastfeeding. It can be caused by bacteria entering the breast through a cracked or sore nipple. Symptoms of mastitis include breast pain, redness, swelling, fever, and flu-like symptoms.
Abscess:
An abscess is a collection of pus that forms when a bacterial infection is not properly treated. In the context of the breast, an abscess can occur as a complication of mastitis. It is characterized by a painful, swollen lump in the breast, and may require drainage and antibiotic treatment.