Dismiss Modal

Types

Common Breast Conditions in Teens

Choose a preferred language

Puberty is the stage of adolescence when your child starts to develop physically into an adult. During puberty, a girl’s breasts begin to grow. As the breasts develop, problems like lumps or infections sometimes occur. These problems can be alarming. But they are common and rarely serious.


Normal and nothing to worry about

Below are some things you or your daughter may be concerned about. But these are not problems. Reassure your daughter that they are perfectly normal:

  • Early or late breast development. The breasts begin to develop at the start of puberty, around age 9 or 10. But this can vary, and some girls develop later or earlier.

  • One is breast larger than the other (asymmetry).  Girls commonly have one breast that develops faster than the other. It's also common and normal for girls and women to have one breast that is larger than the other. The difference can be as much as a bra cup size or more.

  • Small or large size. Breasts come in all shapes and sizes. There is almost no size that is considered abnormal. If breasts fail to develop at all, or if they are so large they are causing neck or back issues, talk to your daughter’s doctor.

  • Breast pain around periods. It's common for breasts to become sore before or during menstrual periods. This is due to hormone changes and is not a cause for concern. If the pain is severe, your daughter’s doctor can suggest treatment.


Common conditions that can be treated

The following are breast conditions that are fairly common in teens. They cause symptoms that may be worrisome. But they are not serious. In many cases, they don’t even need treatment. Talk with the doctor if your daughter has signs of any of these problems.

  • Fibroadenomas. These are smooth, solid lumps of fibrous tissue in the breasts. They are not cancer (benign) and are harmless. Fibroadenomas may come and go around periods. If your daughter has a lump, their doctor can confirm whether it is a fibroadenoma. If the lump is growing in size or is painful, it can be removed.

  • Fibrocystic breast changes. This is the development of fluid-filled sacs in the breasts. They make the breast feel lumpy, tender, or painful. They are not cancer. And they don’t make a girl more likely to get breast cancer. Treatment can help relieve symptoms. Reducing the amount of caffeine and fat in a girl’s diet may help. Your daughter’s doctor can discuss other treatment choices with you.

  • Infection. Infection is the growth of harmful bacteria. Infection of breast tissue is possible, especially if your daughter is too modest to get a cut or sore on the breast cared for. Symptoms of infection include redness, warmth, red lines on the skin, or the skin feeling sore. Your daughter may also have a fever. If your daughter shows signs of an infection, call the doctor. Treatment with antibiotics may be needed.

    Cross-section side view of breast showing nipple, glands, fat, and chest muscle.Cross-section side view of breast showing breast problems of cyst, infection, and fibroadenoma..


When to contact your doctor

Contact the doctor if your daughter has:

  • Signs of breast infection.

  • Nipple discharge.

  • New lumps, or lumps that grow or are painful.

  • Breast pain that doesn’t go away with the menstrual cycle.

  • No breast development by age 15 .

Featured in

© 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
Wellness
For Teens: Birth Control Choices

Having sex is a serious decision that you should think about carefully. If you decide to have sex, your healthcare provider can help you decide which type of birth control is best for you. Some of the most common types are described below.

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
Urology
Recognizing Urinary or Gynecologic Problems

Vaginal bleeding and discharge are a normal part of a teen girl's menstrual cycle. If your daughter notices anything different or unusual, talk with your teen's healthcare provider.

Read article
Mental Health
When Your Teen Is Diagnosed with Depression

Depression is a mood disorder. This means that the condition affects your child's mood and behavior. No one is exactly sure what causes depression. It is known that depression is associated with changes in levels of certain chemicals in the brain. These chemicals affect the ability to feel and experience pleasure.