Visual diagnosis: 4-month-old girl with diffuse, varied dermatitis and bullae

Area of Science:

• Pediatric Dermatology
• Autoimmunology
• Immunodermatology

Background:

• Childhood bullous pemphigoid (CBP) is a rare autoimmune blistering disorder.
• It is the most common IgG-mediated subepidermal bullous disease in pediatric patients.

Observation:

• CBP often presents with tense blisters on the palms and soles in infants.
• Clinical presentation can be varied, complicating diagnosis.
• Definitive diagnosis relies on immunofluorescence findings.

Findings:

• Direct immunofluorescence shows linear IgG and/or C3 deposition at the basement membrane zone (BMZ).
• Indirect immunofluorescence detects IgG antibodies targeting the BMZ.

Implications:

• Early diagnosis and treatment are crucial for managing CBP.
• Oral prednisolone is the first-line therapy, with slow tapering to prevent relapse.
• Treatment duration is individualized based on remission rates.