Bacterial infection and atopic eczema

Area of Science:

• Pediatric Dermatology
• Infectious Diseases in Children
• Clinical Immunology

Background:

• Atopic eczema is a chronic inflammatory skin condition common in children.
• Bacterial infections are known complications that can exacerbate atopic eczema.
• The diagnostic signs and management of bacterial infections in atopic eczema require further clarification.

Purpose of the Study:

• To prospectively investigate the incidence and characteristics of bacterial infections exacerbating atopic eczema in children.
• To identify common bacterial pathogens involved in eczema exacerbations.
• To evaluate the clinical presentation and inform treatment strategies for infected atopic eczema.

Main Methods:

• Prospective study of 190 children with atopic eczema over 2.5 years (mean 13 months observation).
• Detailed recording of eczema exacerbations, suspected bacterial infections, and treatment responses.
• Microbiological analysis to identify causative pathogens, primarily Staphylococcus aureus and beta-hemolytic streptococci.

Main Results:

• Bacterial infection exacerbated atopic eczema in 40% of children, with 32% experiencing recurrent infections.
• Staphylococcus aureus was identified in 97% of infectious episodes, often with beta-hemolytic streptococci (62%).
• Clinical signs like pustules and crusting were indicative but not solely diagnostic; response to antibiotics was key.

Conclusions:

• Bacterial infection is a common and significant factor in atopic eczema exacerbations in children.
• Diagnostic clinical signs may be ambiguous, necessitating a clinical response to anti-infective therapy for confirmation.
• A trial of oral antibiotics is warranted for children with severe or troublesome atopic eczema flares.