Types

Breast Infections and Inflammations

Choose a preferred language


What is lactational mastitis?

The most common type of breast infection is lactational mastitis. This happens when a person is breastfeeding. The nipples become cracked and sore. This allows bacteria from the baby's mouth to enter the ducts and rapidly multiply in the milk. Sometimes an infection also occurs because of a blocked milk duct. In both cases, the breast becomes hard, reddened, hot, and painful.


Treatment for lactational mastitis

Treatment will depend on your symptoms, age, and general health. It will also depend on how bad the condition is.

Your doctor may suggest trying to unblock the duct with warm compresses and massage. They may also prescribe antibiotics and an analgesic for pain. Your doctor will advise completely emptying the breast of milk regularly. Emptying the breast completely will also help prevent lactational mastitis. In some cases, lactational mastitis progresses and forms a pus-filled infection (abscess). This is a more serious condition that may need drainage.

Featured in

Online Medical Reviewer: Diane Horowitz MD

Online Medical Reviewer: Donna Freeborn PhD CNM FNP

Online Medical Reviewer: Heather M Trevino BSN RNC

Date Last Reviewed: 05/01/2025

© 2000-2026 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.

Make an Appointment

Make an Appointment

Find a Doctor

Find a Doctor

Find a Location

Find a Location
Related Articles
Read article
Breast Health
Common Benign Lumps

The two most common types of benign breast lumps are cysts and fibroadenomas. A cyst is a fluid-filled sac that develops in the breast tissue. Fibroadenomas are solid, smooth, firm, benign lumps that are most commonly found in women in their late teens and early 20s.

Read article
Breast Health
Understanding Breast Cysts

A breast cyst is a fluid-filled sac that forms in the breast tissue. You can have one or more cysts at a time. They can occur in one or both breasts.

Read article
Breast Health
Breast Conditions in Young Women

Some breast changes or conditions are related to a young woman's menstrual cycle, but others may occur at any time. Most breast conditions are benign. Read more about breast changes in young women.

Read article
Breast Health
Diagnosing Noncancerous (Benign) Breast Conditions

To diagnose a breast condition, your healthcare provider will examine your breasts and may order imaging tests or a biopsy.