Sore Nipples in Lactating Women - Causes and Treatment

Causes

Treatment by Cause

1. General / Latch-Related Soreness (most common)

• Correct positioning and latch-on - this is the single most important intervention
• Expressed breast milk applied to the nipple after feeds has some evidence of benefit
• Purified lanolin cream (e.g., Lansinoh) - widely used; a 2024 systematic review (PMID 38837198) found some evidence favoring lanolin over breast milk for pain, though certainty of evidence remains low
• Analgesics (ibuprofen, acetaminophen) for pain relief
• Breast shields / nipple shields to reduce friction while healing
• Consider referral to a lactation consultant for technique assessment

2. Cracked Nipple

• Rest the nipple for 48 hours; empty the breast with a breast pump during this time
• Gently wash the sore nipple with warm water and moisturizing soap
• Apply mupirocin antimicrobial cream (to address bacterial colonization)
• Monitor for progression to lactational mastitis

3. Candidal Nipple Infection

• Nystatin ointment applied to nipples and areolae after each feeding
• Simultaneously treat the infant with nystatin oral drops (after each feeding) for 2 full weeks
• Discard and replace pacifiers/bottle nipples; sterilize new ones daily
• For recurrent/persistent episodes: oral fluconazole 200 mg once daily x 7-14 days for the mother; infant dose 6 mg/kg on day 1, then 3 mg/kg every 24 hours
• Address contributing factors: treat maternal vaginal thrush, reduce dietary sugar, consider lactobacillus supplementation (capsule or yogurt)

4. Nipple Eczema

• Topical corticosteroids (e.g., 0.1% betamethasone) or topical calcineurin inhibitors (TCIs) - effective for non-infectious eczema
• Wipe off cream before feeding
• Identify and eliminate contact allergens (lanolin, vitamin E creams, chamomile, preservatives are common culprits)
• Optimize breastfeeding positioning (poor latch is a common cofactor)
• For bacterial superinfection (Staphylococcus): oral antibiotics are preferred over topical
• For concurrent candidal infection: treat both mother and infant
• If unilateral eczema persists >3 months, biopsy to exclude Paget's disease is mandatory

5. Raynaud's Phenomenon of the Nipple

• Topical nifedipine may reduce vasospasm and pain

6. Infant Ankyloglossia (Tongue-Tie)

• Frenotomy improves breastfeeding mechanics and reduces maternal nipple pain (supported by multiple systematic reviews, PMIDs 39936271, 37608056)

When to Escalate

• Nipple soreness with fever, redness, and systemic symptoms - consider puerperal mastitis (treat with dicloxacillin or cephalexin; MRSA coverage if community-acquired risk)
• Persistent unilateral nipple/areolar changes not responding to treatment - rule out Paget's disease with biopsy
• Persistent pain >2 weeks - requires full evaluation for all potential causes

Evidence Note

• Tintinalli's Emergency Medicine, "Complications of Lactation"
• Bailey and Love's Short Practice of Surgery 28th Ed, "Cracked Nipple"
• Creasy & Resnik's Maternal-Fetal Medicine, "Candidiasis of Nipple and Breast"
• Andrews' Diseases of the Skin, "Breast Eczema (Nipple Eczema)"
• Nozimoto et al., Breastfeed Med 2024 [PMID 38837198]