Recently, the issue of eczema on the buttocks of infants and young children has drawn widespread attention from parents. Pediatric experts point out that this disease is more common in children aged 0 to 3 and is closely related to the use of diapers, skin characteristics and care methods. This article, based on comprehensive medical research and clinical experience, sorts out five major pathogenic factors and scientific protection suggestions.
Skin damage caused by mechanical friction
Rough diaper materials or improper wearing methods can easily cause continuous friction. Clinical data show that approximately 65% of the cases are related to the damage of the stratum corneum caused by the compression and frequent shaking of the diaper edge. Experts suggest choosing pure cotton soft diapers, checking and changing them every two hours, and intermittently exposing the buttocks at night to promote ventilation.
A humid environment weakens the barrier function
The closed space formed by urine and sweat can dissolve the lipid layer of the skin, causing the stratum corneum to absorb water excessively and expand. Experiments have proved that a moist state lasting for more than 6 hours can increase the pH value of the skin by 1.2 units and significantly reduce the antibacterial ability. When providing care, gently wipe with 37℃ warm water and use a medical-grade hair dryer for low-temperature drying.
Contact allergic reactions require vigilance
Chemical fiber components, detergent residues and preservatives in wet wipes are common allergens. Among the cases received by Beijing Children’s Hospital in 2024, 28% of the children tested positive in the patch test. It is recommended to give priority to using medical-grade care products without additives. New clothes need to be rinsed more than three times.
There are hidden dangers in the defect of the physiological barrier
The epidermis of infants and young children is only one-third the thickness of that of adults, and the insufficient sebum secretion leads to a lack of natural moisturizing factors. A study by the Children’s Hospital of Fudan University shows that regular use of ceramide-containing hip protection ointment can reduce the incidence rate by 42%. It is recommended to apply the protective layer within 3 minutes after cleaning.
Secondary infection aggravates symptoms
After skin damage, it is prone to fungal or bacterial infections, typically manifested as satellite papules around the erythema. Antifungal preparations should be used under the guidance of a doctor. Do not abuse hormone ointments on your own. Data from Shanghai Jiao Tong University School of Medicine shows that standardized treatment can shorten the course of the disease by 58%.
Three major principles of Daily protection
1. Cleaning: Rinse with warm water within 10 minutes after defecation and avoid vigorous wiping
2. Drying: Air dry naturally or with cold air. Expose to the sun for 15 minutes every day
3. Monitoring: Lactating mothers should pay attention to hypoallergenic diets and keep the room temperature at 24℃±2 ℃
The Affiliated Hospital of Capital Institute of Pediatrics reminds that if the rash persists for a week without healing or if there is a fever symptom, it is necessary to promptly investigate complications such as atopic dermatitis. Scientific nursing combined with regular follow-up visits can effectively reduce the recurrence rate to less than 15%.
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