How to perform a breast self-examination: How often, and what should prompt a visit to the doctor if you feel something unusual.
- ป้าหมอนุช
- 12 hours ago
- 3 min read
Breast self-examination is the regular observation and palpation of one's own breasts. This helps to become familiar with normal features and to notice changes early. While it is not a screening test that can replace mammograms, it can help detect abnormalities early and allow for timely medical attention.
How often should you perform breast self-examinations?
It is recommended to check your breasts monthly. The best time is 7–10 days after your period starts, as your breasts will be least tender and swollen. For those who have gone through menopause, choose the same day each month.
Steps for performing a breast self-examination.
This can be done in front of a mirror or while showering/lying down, as follows:
Stand in front of a mirror with your arms at your sides. Observe your shape, size, skin, and both nipples.
Raise your arms above your head and observe again whether there are any indentations, skin changes, or nipple retraction.
Using three fingertips, gently palpate in a circular motion across the entire breast, moving from the outside inward, covering the entire armpit.
Perform palpation while lying flat (place a pillow under the shoulder of the side being examined) to spread the breast tissue and make it easier to palpate.
Gently squeeze the nipple to check for any abnormal discharge or blood.
What types of physical sensations warrant a visit to the doctor?
You should see a doctor if you experience any of these:
A new lump that is clearly palpable, especially a hard lump with irregular edges or that is immobile.
Breast skin that is dimpling, red, or has a texture resembling an orange peel.
Inverted nipples, retraction, or abnormal bleeding/discharge.
Both breasts have changed shape or size noticeably from their original state.
Can self-examinations replace mammograms?
No, self-examination is supplementary, not a replacement. Mammograms and ultrasounds are still necessary for screening for early-stage cancers that may not yet be palpable and should be done in combination.
Frequently Asked Questions about Breast Self-Examination (FAQ)
At what age should one begin performing breast self-examinations?
It is recommended that women begin to familiarize themselves with breast examinations from the age of 20 onwards, so they can recognize the normal characteristics of their breasts.
When is the best time to perform a breast self-examination?
The breasts are softest and least tender to the touch 7–10 days after menstruation begins. Those who have gone through menopause should choose the same day each month for their period.
If I feel a lump every time I touch it, does that mean it's cancer?
No, most lumps are benign, such as cysts or normal tumors, but it's always best to have a doctor confirm the diagnosis.
I did a self-examination and found nothing. Do I still need a mammogram?
Self-examination is still necessary because early-stage cancer is often undetectable by palpation. However, self-examination cannot replace mammograms.
Is it okay to perform breast self-examinations too frequently?
Checking once a month is ideal. Checking too frequently may cause unnecessary anxiety, as breast changes occur with the menstrual cycle.
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Verified by: Assoc. Prof. Yaowanuch Kongdan and the breast specialist team, Namarak Hospital • Last updated: May 2026
Note: This information is for general knowledge only and is not personalized medical advice. If you notice any abnormalities, please consult a doctor.
If you notice any abnormalities or would like to undergo screening, please make an appointment by calling 02 059 0245–48 or via LINE @namark.
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