Breast Milk

Breast milk comes up in toddler eczema in two separate ways. The first is as a topical home remedy: fresh expressed milk dabbed on eczema patches, or “breast milk baths”. The second is breastfeeding as prevention: whether breastfeeding, or breastfeeding exclusively, lowers a child’s chance of developing Atopic Dermatitis. The case for topical use rests on milk’s antimicrobial and anti-inflammatory components, such as immunoglobulins and lactoferrin, and on reports from public-health nurses about it being used for conjunctivitis, rhinitis and eczema (Berents 2015). Families also choose it because many carers have Steroid Phobia and want a “natural”, free option. Berents et al. say this explicitly as their reason for running the trial.

Breast Milk [part-of] Herbal and Home Remedies for Eczema Steroid Phobia [causes] Breast Milk

Topical breast milk vs hydrocortisone and emollient. Two small trials point in different directions. In an Iranian single-site RCT, infants with mild-to-moderate AD were treated with either topical human breast milk or Hydrocortisone 1% ointment. The groups did not differ on objective SCORAD or PO-SCORAD at days 7, 14 or 21. The authors read this as equivalence and favoured breast milk on cost and access. The authors also note that a single site limits generalisability (Kasrae 2015). A finding of “no difference” in a small trial is not proof of equivalence. A Norwegian split-body, physician-blinded pilot RCT (Berents 2015, Oslo University Hospital) is closer to the toddler age range: mean age 18.5 months, range 4–32 months. One eczema patch on each child got fresh expressed milk plus emollient three times a day for 4 weeks, and the matching patch on the other side got emollient alone. Nine children were enrolled and six completed. Mean SCORAD was 35 at the start and 34 at the end. The milk-treated patch did better than the emollient-only patch in two children and worse in three. The conclusion was that “no effect was found on eczema spots treated with topical application of fresh human milk.” Both trials are tiny, and neither supports using breast milk in place of Emollient Therapy or a mild topical corticosteroid.

Breast Milk [relates] Hydrocortisone Breast Milk [relates] Emollient Therapy Breast Milk [treats] Atopic Dermatitis

Conflict: [Kasrae et al., Int J Dermatol, 2015] says topical breast milk and hydrocortisone 1% “were found to have the same effects” on infant AD over 21 days. [Berents et al., BMC Dermatol, 2015] found “no effect” of fresh breast milk added to emollient versus emollient alone in children aged 4–32 months. Unresolved — add to open_questions.

Breastfeeding and eczema prevention. The only large randomised evidence is the PROBIT Trial. This cluster RCT ran in 31 Belarusian maternity hospitals and polyclinics, with 17,046 mother–infant pairs. Sites were randomised to Baby-Friendly breastfeeding promotion or usual care. Exclusive breastfeeding at 3 months rose from 6.4% to 43.3%. Atopic eczema in the first year fell from 6.3% to 3.3% (adjusted OR 0.54, 0.31–0.95) (Kramer 2001). At the 16-year follow-up of 13,557 adolescents, flexural eczema on skin examination was 54% lower in the intervention group (OR 0.46, 0.25–0.86). Questionnaire-reported eczema symptoms, asthma and lung function did not differ. The authors also noted that eczema and allergy are rare in Belarus, which limits generalisability (Flohr 2017). The Cochrane review of exclusive breastfeeding duration (Kramer & Kakuma) compared 6 months with 3–4 months of exclusive breastfeeding. Six months reduced gastrointestinal infection, but “no significant reduction in risk of atopic eczema, asthma, or other atopic outcomes has been demonstrated” in studies from Finland, Australia and Belarus. In short, promoting breastfeeding showed some eczema benefit in one trial, but stretching exclusive breastfeeding from 3–4 to 6 months has not been shown to prevent eczema. Breastfeeding is recommended for many other reasons. Parents of a toddler with eczema should not feel they caused it by stopping early.

PROBIT Trial [supports] Breast Milk Breast Milk [prevents] Atopic Dermatitis Cochrane [contradicts] Breast Milk Breast Milk [relates] Probiotics

Conflict: [Kramer et al., PROBIT, JAMA, 2001; Flohr et al., JAMA Pediatr, 2017] say breastfeeding promotion reduced atopic eczema in infancy (OR 0.54) and flexural eczema at 16 years (OR 0.46). [Kramer & Kakuma, Cochrane, 2012] says exclusive breastfeeding for 6 vs 3–4 months shows no significant reduction in atopic eczema. Partly a difference in question (promotion vs duration), but unresolved — add to open_questions.

Toddler safety. Topical breast milk is low-risk, but it is not sterile. In Berents 2015, Staphylococcus aureus, alpha-haemolytic streptococci or coagulase-negative staphylococci grew in 3 of 28 milk samples (11%). The authors cite 10–23% of samples from healthy donors containing bacteria. No secondary infection due to milk application was detected. S. aureus already colonises most eczema lesions, so milk should not be relied on, or added, when a patch looks infected (weeping, crusting, pustules). In that case see Infected Eczema. Breastfeeding and maternal diet sometimes push parents toward cutting foods out of their own diet. That is a separate issue (see Elimination Diets).

Unsupervised maternal or toddler elimination diets

Some parents link breast milk to eczema and cut dairy, egg or soy from their own or their toddler’s diet without medical input. The Elimination Diets note covers the risk of nutritional gaps. Do this only with a doctor or dietitian, after proper allergy assessment.

Breast Milk [relates] Staphylococcus aureus Breast Milk [relates] Infected Eczema

What parents report (evidence: anecdotal). The Reddit API failed this round, so these come from threads already saved in the vault. One r/beyondthebump parent listed “Breast milk baths, oatmeal baths… Then we used coconut oil” among things tried before finding that thick emollient after the bath helped most (raw/natural-oils/source-5). In an r/beyondthebump thread on an exclusively breastfed 4-month-old, parents argued about whether allergens pass through breast milk and cause eczema. One said “Not many allergens pass through breastmilk, so an elimination diet probably won’t help you much”. Another said “Ours heavily reacted to multiple allergens through my breastmilk” and described eliminating soy, egg and dairy (raw/food-allergy/source-10). These threads show breast milk tried as one item among many, never as a stand-alone fix.

Breast Milk [relates] Food Allergy

Connections

• Herbal and Home Remedies for Eczema — listed remedy; single infant RCT, source: Kasrae 2015
• Hydrocortisone — comparator in topical breast milk RCT; no difference at 21 days, source: Kasrae 2015
• Emollient Therapy — comparator in split-body pilot; milk added no benefit, source: Berents 2015
• PROBIT Trial — breastfeeding promotion cut infant eczema (OR 0.54), source: Kramer 2001; Flohr 2017
• Cochrane — 6 vs 3–4 months exclusive breastfeeding: no eczema reduction, source: Kramer & Kakuma
• Staphylococcus aureus — found in expressed milk samples, source: Berents 2015
• Steroid Phobia — motivates search for steroid-free alternatives, source: Berents 2015
• Probiotics — WAO suggests probiotics for breastfeeding mothers of high-risk infants, source: Fiocchi 2015
• Elimination Diets — parents debate maternal diet changes while breastfeeding, source: Reddit (anecdotal)
• Lanolin — nipple creams expose breastfed infants’ faces to lanolin, source: Cutis 2023
• AAD Pediatric Guideline 2026 — conditional rec against human milk consumption as an AD-prevention strategy, source: JAAD 2026