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Emergency And Acute Medicine – Diaper Rash
Basics
Description Very common dermatologic disorder of infancy. Most frequent in the first month of life and again between 12–24 months. In adult incontinent patients, incidence ranges from 5.7% to more than 42% and increases with age. Diaper rash is most often a primary irritant or contact dermatitis in which disruption of the outer skin layers leads to inflammation, impairment of normal skin microflora, and loss of barrier function. Excess moisture promotes microbial overgrowth. Secondary fungal or bacterial infection may result in more severe disease. Also referred to as irritant diaper dermatitis.
Etiology
Irritants Moisture from prolonged overhydration due to infrequent diaper changes, poorly absorbent or cloth diapers, and urinary or fecal incontinence in adults. Friction from diaper rubbing or loose-fitting diapers. Chemical irritation from prolonged exposure to stool enzymes, urine, scented wipes, soaps, diaper materials, or adhesives.
Infection Candida albicans is isolated in up to 80% of infants, particularly after systemic antibiotic use. Bacterial infection is usually secondary and commonly involves Staphylococcus aureus, Streptococcus, or Escherichia coli, with occasional Peptostreptococcus and Bacteroides. Other etiologies include seborrheic diaper dermatitis and atopic (contact) diaper dermatitis. Risk factors include oral thrush, multiple prior episodes, prolonged diaper use, and diarrhea.
Diagnosis
Diagnosis is typically clinical and based on the appearance and distribution of the rash.
Signs And Symptoms
History The child may cry during diaper changes or wiping and may appear irritable.
Physical exam Irritant dermatitis presents as beefy-red confluent patches with sharp borders at the diaper edges, usually sparing skin folds. Candidal dermatitis appears as a well-demarcated erythematous rash with satellite pustules or papules and commonly involves skin folds. Bacterial infection may cause superficial erosions with yellow crusting or bullae. Seborrheic diaper dermatitis presents with erythematous plaques and greasy yellow or gray scale and is often associated with scalp involvement. Atopic diaper dermatitis resembles irritant dermatitis but includes lesions on other areas such as the face. Variants include Jacquet erosive dermatitis with ulcers or erosions, psoriasiform dermatitis with silvery scale and spared folds, and granuloma gluteale infantum characterized by violaceous papules or nodules that resolve over weeks to months and may scar.
Essential Workup
Assess diaper-changing practices and urinary and fecal habits. Examine other body areas for associated rashes. Consider child abuse or neglect by evaluating hygiene and looking for burns or other trauma.
Diagnosis Tests And Interpretation
Laboratory testing is usually unnecessary. Bacterial cultures are reserved for complicated cases. Skin scrapings with potassium hydroxide preparation or culture may help distinguish candidal infection from atypical seborrheic dermatitis by identifying budding yeast or pseudohyphae.
Differential Diagnosis
Includes child abuse or neglect, impetigo, scabies, herpes simplex, varicella, congenital syphilis, psoriasis, atopic dermatitis, seborrheic dermatitis, papular urticaria, bullous pemphigoid, epidermolysis bullosa, acrodermatitis enteropathica, acrodermatitis enteropathica–like eruption, and Langerhans cell histiocytosis.
Treatment
Emergency department treatment and procedures Management focuses on reducing moisture, minimizing contact with urine and feces, and treating infection when present. Cleanse gently with water and cotton balls; avoid wipes, talcum powder, harsh soaps, and alcohol. Change diapers frequently, allow air drying, and keep the area uncovered when possible. Use highly absorbent disposable diapers and avoid cloth diapers during active dermatitis.
Barrier creams Zinc oxide, petroleum, or lanolin applied after each diaper change and continued after resolution to prevent recurrence. Apply over antifungal medication if Candida is present.
Corticosteroids Low-potency topical hydrocortisone (≤1%) for short courses in moderate to severe inflammation; discontinue after 3–5 days.
Antifungals Nystatin, clotrimazole, miconazole, or ciclopirox applied after diaper changes and continued for 1–2 days after clearing. Consider oral antifungal therapy in refractory cases or with concurrent oral candidiasis.
Antibacterials Topical mupirocin if bacterial infection is suspected; systemic antibiotics are rarely required.
Medication
Ciclopirox 0.77% cream, gel, or suspension applied topically twice daily after diaper changes. Clotrimazole 1% cream applied twice daily after diaper changes. Hydrocortisone 0.5–1% cream applied twice daily. Miconazole 2% cream applied twice daily after diaper changes. Miconazole nitrate 0.25% ointment applied after diaper changes and bathing. Mupirocin 2% ointment or cream applied 3–5 times daily after diaper changes in infants older than 3 months. Nystatin 100,000 U/g cream, powder, or ointment applied twice daily after diaper changes.
Follow-Up Disposition
Admission criteria Evidence of child abuse or neglect or signs of sepsis.
Basics
Description Very common dermatologic disorder of infancy. Most frequent in the first month of life and again between 12–24 months. In adult incontinent patients, incidence ranges from 5.7% to more than 42% and increases with age. Diaper rash is most often a primary irritant or contact dermatitis in which disruption of the outer skin layers leads to inflammation, impairment of normal skin microflora, and loss of barrier function. Excess moisture promotes microbial overgrowth. Secondary fungal or bacterial infection may result in more severe disease. Also referred to as irritant diaper dermatitis.
Etiology
Irritants Moisture from prolonged overhydration due to infrequent diaper changes, poorly absorbent or cloth diapers, and urinary or fecal incontinence in adults. Friction from diaper rubbing or loose-fitting diapers. Chemical irritation from prolonged exposure to stool enzymes, urine, scented wipes, soaps, diaper materials, or adhesives.
Infection Candida albicans is isolated in up to 80% of infants, particularly after systemic antibiotic use. Bacterial infection is usually secondary and commonly involves Staphylococcus aureus, Streptococcus, or Escherichia coli, with occasional Peptostreptococcus and Bacteroides. Other etiologies include seborrheic diaper dermatitis and atopic (contact) diaper dermatitis. Risk factors include oral thrush, multiple prior episodes, prolonged diaper use, and diarrhea.
Diagnosis
Diagnosis is typically clinical and based on the appearance and distribution of the rash.
Signs And Symptoms
History The child may cry during diaper changes or wiping and may appear irritable.
Physical exam Irritant dermatitis presents as beefy-red confluent patches with sharp borders at the diaper edges, usually sparing skin folds. Candidal dermatitis appears as a well-demarcated erythematous rash with satellite pustules or papules and commonly involves skin folds. Bacterial infection may cause superficial erosions with yellow crusting or bullae. Seborrheic diaper dermatitis presents with erythematous plaques and greasy yellow or gray scale and is often associated with scalp involvement. Atopic diaper dermatitis resembles irritant dermatitis but includes lesions on other areas such as the face. Variants include Jacquet erosive dermatitis with ulcers or erosions, psoriasiform dermatitis with silvery scale and spared folds, and granuloma gluteale infantum characterized by violaceous papules or nodules that resolve over weeks to months and may scar.
Essential Workup
Assess diaper-changing practices and urinary and fecal habits. Examine other body areas for associated rashes. Consider child abuse or neglect by evaluating hygiene and looking for burns or other trauma.
Diagnosis Tests And Interpretation
Laboratory testing is usually unnecessary. Bacterial cultures are reserved for complicated cases. Skin scrapings with potassium hydroxide preparation or culture may help distinguish candidal infection from atypical seborrheic dermatitis by identifying budding yeast or pseudohyphae.
Differential Diagnosis
Includes child abuse or neglect, impetigo, scabies, herpes simplex, varicella, congenital syphilis, psoriasis, atopic dermatitis, seborrheic dermatitis, papular urticaria, bullous pemphigoid, epidermolysis bullosa, acrodermatitis enteropathica, acrodermatitis enteropathica–like eruption, and Langerhans cell histiocytosis.
Treatment
Emergency department treatment and procedures Management focuses on reducing moisture, minimizing contact with urine and feces, and treating infection when present. Cleanse gently with water and cotton balls; avoid wipes, talcum powder, harsh soaps, and alcohol. Change diapers frequently, allow air drying, and keep the area uncovered when possible. Use highly absorbent disposable diapers and avoid cloth diapers during active dermatitis.
Barrier creams Zinc oxide, petroleum, or lanolin applied after each diaper change and continued after resolution to prevent recurrence. Apply over antifungal medication if Candida is present.
Corticosteroids Low-potency topical hydrocortisone (≤1%) for short courses in moderate to severe inflammation; discontinue after 3–5 days.
Antifungals Nystatin, clotrimazole, miconazole, or ciclopirox applied after diaper changes and continued for 1–2 days after clearing. Consider oral antifungal therapy in refractory cases or with concurrent oral candidiasis.
Antibacterials Topical mupirocin if bacterial infection is suspected; systemic antibiotics are rarely required.
Medication
Ciclopirox 0.77% cream, gel, or suspension applied topically twice daily after diaper changes. Clotrimazole 1% cream applied twice daily after diaper changes. Hydrocortisone 0.5–1% cream applied twice daily. Miconazole 2% cream applied twice daily after diaper changes. Miconazole nitrate 0.25% ointment applied after diaper changes and bathing. Mupirocin 2% ointment or cream applied 3–5 times daily after diaper changes in infants older than 3 months. Nystatin 100,000 U/g cream, powder, or ointment applied twice daily after diaper changes.
Follow-Up Disposition
Admission criteria Evidence of child abuse or neglect or signs of sepsis.
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