Atopic Dermatitis in Children: Age-Specific Management

Overview / Definition Atopic dermatitis (AD) is a chronic, relapsing inflammatory skin disorder that is increasingly prevalent in children. It is characterized by itchy, erythematous patches, often accompanied by dry skin and lichenification. AD commonly presents in early infancy and can persist into adolescence and adulthood. Epidemiology AD is one of the most common dermatologic conditions in pediatric populations. The following points summarize its epidemiology: Prevalence in children is approximately 10-20%, with variations depending on geographic location. Onset typically occurs during the first year of life in 60% of cases. Familial history of atopy (asthma, allergic rhinitis) significantly increases the risk. Pathophysiology / Mechanism The pathogenesis of AD involves a complex interplay of genetic, environmental, and immunologic factors: Defective skin barrier function due to mutations in the filaggrin gene leads to increased transepidermal water loss. Altered immune response with a predominant Th2 cell response during acute phases. Chronic inflammation results in skin thickening and lichenification. Clinical Presentation AD typically presents with the following clinical features: Infants: Erythematous, crusted lesions on the face, scalp, and extensor surfaces. Children: Eczematous patches often found in the flexural areas such as the elbows and knees. Adolescents: Lichenified plaques, often associated with a history of pruritus and xerosis. Diagnosis / Workup The diagnosis of AD is primarily clinical, based on the following criteria: History of pruritus. Typical morphology and distribution of lesions. Chronicity or relapsing nature of the condition. Additional investigations may be warranted to rule out other conditions: Patch testing for suspected contact dermatitis. Skin scraping to exclude fungal infections. Serum IgE levels to assess atopy. Treatment / Management Management of AD is tailored to the patient's age and severity of the disease: Moisturizers