Herpetiform blisters in systemic lupus erythematosus

Area of Science:

• Dermatology
• Rheumatology
• Immunopathology

Background:

• Systemic lupus erythematosus (SLE) is a chronic autoimmune disease affecting multiple organ systems.
• Cutaneous manifestations are common in SLE, varying widely in presentation.
• Dermatitis herpetiformis is a distinct blistering disease associated with celiac disease.

Observation:

• Four patients with SLE developed a vesicobullous eruption.
• The skin histology of this eruption mimicked dermatitis herpetiformis.
• Direct immunofluorescence microscopy in three patients revealed characteristic SLE patterns.

Findings:

• The observed vesicobullous eruption is a distinct cutaneous manifestation of SLE.
• Skin lesions improved with treatment targeting the underlying systemic disease.
• Recurrence of the eruption correlated with SLE exacerbations.

Implications:

• This distinctive blistering lesion serves as a significant indicator of SLE disease activity.
• Recognizing this specific lupus skin manifestation aids in disease monitoring and management.
• Understanding this association can improve diagnostic accuracy and therapeutic strategies for SLE patients with cutaneous involvement.