A breast self-examination (BSE) is a visual and physical check you do at home to become familiar with how your breasts normally look and feel, so you can notice changes early. While major medical organizations no longer recommend BSE as a formal monthly screening tool, the core idea behind it, knowing your own body well enough to spot something new, remains widely encouraged under the broader concept of “breast awareness.”
Why the Recommendations Have Shifted
For decades, women were taught to perform a structured monthly breast exam on a specific schedule. Large studies have since found that formal BSE programs do not reduce breast cancer deaths when women also have access to screening mammograms. The American Cancer Society notes there is very little evidence that self-exams or even clinical breast exams done by a healthcare provider help find breast cancer early in women who are already getting mammograms.
What has replaced the old approach is “breast awareness.” This means understanding the symptoms of breast cancer, becoming familiar with the usual look and feel of your breasts, and promptly reporting any changes to your doctor. Self-examination can still be part of this, but it doesn’t need to follow a rigid monthly schedule. Most women who find breast cancer because of a symptom, like a lump, discover it during everyday activities such as bathing or getting dressed.
When to Check
If you menstruate, the best time to examine your breasts is the week after your period ends. Hormone levels shift throughout each cycle, causing breast tissue to swell and feel tender. That swelling starts to decrease once your period begins, so waiting until the week after gives you the clearest baseline. If you’re postmenopausal, pregnant, or don’t have regular periods, pick a consistent day each month that’s easy to remember.
The Visual Check
Start in front of a mirror with your shirt and bra off. Stand with your arms at your sides and look at both breasts. You’re checking for anything that’s different from your normal: changes in shape or size, dimpling or puckering of the skin, a nipple that has recently turned inward, or skin that looks like an orange peel. Raise your arms above your head and look again. Then place your hands on your hips and flex your chest muscles, watching for the same changes.
Skin color changes deserve special attention. A rash, redness, or discoloration that appears quickly, sometimes within days or even hours, can be a sign of inflammatory breast cancer. On darker skin tones, this may look dark or purple rather than red. Swelling that makes the skin pores look exaggerated is another visual clue. These changes can start small, resembling a bug bite, but often spread to involve most of the breast in a short time.
How to Feel Your Breasts
You’ll check your breasts in two positions: standing (many people do this in the shower, where wet skin makes it easier to feel) and lying down. Lying down spreads the breast tissue more evenly across your chest wall, which is especially helpful if you have larger breasts.
Use the pads of your three middle fingers, not the tips. Press in small motions at three different pressure levels: light pressure for the tissue just under the skin, medium pressure for the deeper tissue, and firm pressure to feel down near the ribcage. You want to cover every part of the breast, including the tissue that extends up toward the collarbone and into the armpit.
To make sure you don’t miss any area, follow a consistent pattern each time. The two most common approaches are vertical strips (moving your fingers up and down in rows, like mowing a lawn) and concentric circles (spiraling from the nipple outward, or from the outer edge inward). A clinical trial comparing the two found that women using the vertical strip pattern covered significantly more breast area. Whichever pattern you choose, stick with it so it becomes automatic. Finish by gently squeezing each nipple to check for any discharge, then repeat the entire process on the other side.
When lying down, place a pillow under the shoulder of the side you’re examining and put that arm behind your head. This positions the breast tissue so it lies flatter, making it easier to detect changes underneath.
What You Might Feel
Breast tissue is naturally lumpy and uneven for many people, which is why knowing your own baseline matters so much. Fibrocystic breast changes are extremely common and can cause swelling, tenderness, cysts, and lumpy areas that shift with your menstrual cycle. Fibroadenomas, a type of benign tumor, typically feel like hard, round lumps that move easily when you push on them. Fat necrosis, which can happen after an injury or surgery, creates round, firm, usually painless lumps.
No self-exam can tell you whether a lump is cancerous. What you’re looking for is anything new or different from what you’ve felt before: a lump that wasn’t there last time, a thickening in one area, a change in size or shape of one breast, skin changes, or nipple discharge you haven’t had before.
What Happens If You Find Something
If you notice a change, the next step is an appointment with your healthcare provider. They’ll likely start with a diagnostic mammogram, which is different from a routine screening mammogram because the radiologist knows to focus on a specific concern. An ultrasound is often done alongside or after the mammogram, particularly to determine whether a lump is solid or fluid-filled. If your breasts are very dense, an MRI may also be used.
When imaging alone can’t determine what a lump is, a biopsy is the next step. This usually involves a needle guided by ultrasound to take a small tissue sample for lab testing. A tiny marker clip, too small to see or feel, is often placed at the biopsy site so the area can be found easily at future checkups. If the lump turns out to be benign, your provider may still schedule follow-up visits to monitor whether it changes over time.
Where BSE Fits in the Bigger Picture
Breast self-examination is not a substitute for mammography. It’s a way of staying connected to what’s normal for your body so that when something changes, you notice it and act. The shift from “examine your breasts on the first of every month” to “know your breasts and report changes” reflects the evidence, but the practical skills are the same. Learning how your breasts feel at different times, recognizing what’s typical for you, and paying attention to visual changes all put you in a better position to catch something early, even if it happens while you’re getting dressed on a Tuesday rather than during a scheduled exam.