Can Treating Baby Eczema Prevent Egg Allergy? The PACI Trial's Benefits and Risks
Dr. Arsy Editorial Team · November 9, 2026
The PACI trial reported fewer egg allergies with enhanced early eczema treatment, but it also identified important growth findings. The researchers said the studied protocol needs modification before it could be considered for routine allergy prevention. Families should not copy the regimen at home. [20]
Who and what were studied?
Researchers enrolled 650 infants aged seven to 13 weeks who had atopic dermatitis; 640 were analyzed. They compared enhanced early topical corticosteroid treatment, applied under the trial protocol to affected and unaffected skin, with conventional reactive treatment. The study was open-label but the primary outcome was assessed with blinding. [20]
At 28 weeks of age, immediate egg allergy confirmed by food challenge was reported in 31.4% of the enhanced group and 41.9% of the conventional group, a reported difference of 10.5 percentage points. Those figures concern egg allergy under the study's conditions, not eczema cure or a moisturizer's effect. [20]
Why the growth results matter
The paper also reported lower average body weight by 422 grams and height by 0.8 centimeters in the enhanced group at the measured age, with confidence intervals reported by the authors. The authors concluded that the protocol should be modified before use for food-allergy prevention in routine care because of corticosteroid safety concerns. This was a group comparison; it cannot predict an individual child's growth. [20]
| Finding | Important limit |
|---|---|
| Lower egg-allergy proportion in the enhanced group | Does not establish prevention of all food allergies or an effect of a cosmetic cream. |
| Lower average weight and height at the measured time | Requires clinical interpretation; it is not a reason to alter a prescribed treatment without contacting the prescriber. |
| 640 infants analyzed | Does not establish the best long-term routine for every child. |
How does this relate to other research?
PETIT investigated heated egg introduction plus eczema care, while LEAP tested peanut introduction in high-risk infants. These studies asked different questions and used different interventions. Moisturizer-only prevention studies such as BEEP do not establish the outcome of a corticosteroid regimen. [1][5][20][21]
If your baby has eczema or a suspected food reaction, discuss skin control, growth and feeding with the pediatrician. Do not use the PACI protocol, increase a steroid, or stop a prescribed treatment because of a research summary. [17][20]
Research context
The references cover food-allergy prevention, food-allergy diagnosis, eczema treatment and primary prevention. These are distinct outcomes, and a review may include the same trial as another review. Each recommendation should be interpreted with the child's individual medical history. [10][11][12][13][16][17]
Care for dry, sensitive skin
Explore Dr. Arsy™ Hydration Recovery Moisturizer #003, 4 oz, a fragrance-free moisturizer for dry, sensitive and eczema-prone skin. These studies did not test #003 and do not show that it prevents or treats eczema or food allergy. Ask the child's clinician before choosing a skin-care product for a baby.
Related reading
- Egg Allergy and Baby Eczema: What the PETIT Trial Did—and Did Not—Prove
- Baby Eczema and Peanut Allergy: What LEAP Found at Age 12
- Do Elimination Diets Improve Eczema? A Review of 10 Trials
- Early Allergen Introduction and Eczema: Food-Allergy Prevention Is a Separate Goal
- Infant eczema prevention and probiotic research
- Baby eczema prevention: comparing moisturizer trials
Research and clinical references
- LEAP: early peanut consumption in high-risk infants.
- LEAP-On: one year of peanut avoidance after early introduction.
- LEAP-Trio: follow-up into adolescence.
- NIAID: U.S. peanut-allergy prevention guidelines.
- PETIT: stepwise heated egg introduction in infants with eczema.
- Early egg exposure in infants with moderate-to-severe eczema.
- Egg introduction in infants at risk for egg allergy.
- Early egg intake in infants without eczema at entry.
- Pooled LEAP and EAT peanut-introduction analysis.
- Allergenic food introduction: systematic review.
- Food-allergy prevention: North American expert consensus.
- EAACI guideline: diagnosing IgE-mediated food allergy.
- Dietary elimination for eczema: systematic review.
- Food-allergy testing in eczema: guideline comparison.
- PreventADALL: skin and food interventions for food allergy.
- AAD guideline: pediatric eczema primary prevention.
- AAD guideline: pediatric eczema management.
- NIAID peanut-guideline clinical summary.
- Timing allergenic food introduction: systematic review.
- PACI: enhanced early infant eczema treatment trial.
- BEEP: moisturizer use and eczema prevention.
- Infant-only probiotic supplementation: prevention review.
Educational information only; not a diagnosis or personalized medical advice. Cited researchers and organizations do not endorse Dr. Arsy products.