A nipple that looks like it’s split in half usually comes down to one of a few causes: a deep crack (fissure) in the skin, a congenital variation you were born with, or tissue changes from a skin condition or infection. Most cases are not dangerous, but some nipple changes do warrant a closer look from a healthcare provider, especially if the change appeared suddenly or came with other symptoms.
Nipple Fissures: The Most Common Cause
The most frequent reason a nipple appears split is a nipple fissure, which is a crack that forms in the surface of the nipple. These can range from shallow surface splits to deep cracks that make the nipple look like it’s divided in two. Fissures are extremely common during breastfeeding, but they also occur in people who are not nursing.
Breastfeeding-related fissures typically develop from a poor latch, friction from a breast pump, or prolonged moisture exposure. The crack can deepen over time if the irritation continues, making it look more like a structural split than a surface wound. Pain, stinging during feeds, and sometimes minor bleeding are the hallmarks.
Outside of breastfeeding, fissures can develop from friction (tight clothing, sports bras), very dry skin, or repeated irritation. Cold, dry weather can worsen them. These non-breastfeeding fissures tend to heal on their own once the source of irritation is removed, though deeper cracks may need a barrier ointment or prescription treatment to close fully.
Eczema and Chronic Skin Conditions
Eczema (atopic dermatitis) on or around the nipple can cause persistent cracking that mimics a split. The skin becomes dry, flaky, and inflamed, and over time repeated cycles of cracking and healing can create a deep, visible groove. Unlike a one-time fissure, eczema-related splits tend to come back in the same spot.
This isn’t just a cosmetic issue. A case report published in JAAD Case Reports described a nonlactating woman with chronic eczema who developed recurrent breast infections traced back to a small, easy-to-miss nipple fissure. Bacteria entered through the cracked skin and caused repeated episodes of cellulitis and fever. Her fissure eventually healed with a combination of topical antiseptic and antibiotic ointment over about a month. If you have eczema and notice a persistent crack in your nipple, treating the underlying skin condition is key to preventing it from becoming an entry point for infection.
Congenital Nipple Variations
Some people are simply born with a nipple that looks divided, grooved, or doubled. This can happen when the nipple tissue doesn’t fully merge during fetal development. A related variation is polythelia (accessory nipples), which occurs in 1 to 2 percent of the population and can sometimes appear as extra tissue on or very near the existing nipple, creating a split or doubled look. These variations are typically harmless and have been present since birth, even if you only noticed them recently. If your nipple has always looked this way and hasn’t changed, a congenital variation is the most likely explanation.
Infections Behind the Nipple
Infections in the ducts just behind the nipple (periductal mastitis) can cause scar tissue to form as they heal. That scar tissue pulls the nipple inward and can distort its shape, sometimes creating a split or retracted appearance. Symptoms of this type of infection include breast pain, warmth, redness, and a thick or sticky nipple discharge. Recurrent infections in this area can lead to increasing distortion over time, so getting treatment early matters for both comfort and long-term appearance.
Subareolar abscesses, which are pockets of infection that form directly behind the areola, can cause similar problems. Repeated episodes lead to scarring that pulls and reshapes the nipple. If your nipple has changed shape alongside pain, swelling, or discharge, an underlying infection is worth investigating.
Changes That Need Medical Attention
Most nipple splits fall into the categories above and are manageable. But certain changes to the nipple can signal something more serious. Paget’s disease of the breast is a rare form of cancer that begins in the nipple and can look deceptively like eczema. It causes flaky, scaly, or crusty skin on the nipple that may ooze or harden. It typically affects only one breast and gradually spreads from the nipple outward to the areola. Because it mimics common skin conditions, it’s often misdiagnosed or ignored for months.
Specific signs that warrant a prompt visit to your provider include:
- Bloody or unusual discharge from one nipple, especially from a single duct
- A new lump in the breast alongside nipple changes
- Skin changes that don’t heal within a few weeks, particularly crusting, scaling, or oozing that looks like eczema but doesn’t respond to typical treatment
- A nipple that has recently turned inward when it was previously flat or protruding
- Changes in only one breast, which are generally more clinically significant than symmetrical changes
Treating and Repairing a Split Nipple
For fissures, the first step is removing whatever is causing the irritation. Breastfeeding parents benefit from a lactation consultant who can assess latch and positioning. Keeping the area moisturized with a lanolin-based ointment or medical-grade nipple cream helps the skin heal. For deeper or infected cracks, a provider may prescribe a topical antibiotic.
For eczema-related splitting, treating the dermatitis itself is essential. This usually means a topical anti-inflammatory prescribed by a dermatologist, along with fragrance-free moisturizers and avoiding known triggers.
If the split is structural, either from a congenital variation or from scarring due to past infections, surgical correction is an option. Plastic surgeons can reshape nipple tissue using skin flaps, where a small piece of nearby skin is folded and sutured into a new nipple shape. Recovery from nipple reconstruction varies, but the procedure is typically outpatient. For people whose nipple distortion resulted from repeated infections, the underlying infection cycle needs to be resolved before any cosmetic repair is attempted.