Diffuse vesiculobullous eruption with systemic findings.

Area of Science:

• Dermatology
• Internal Medicine
• Pharmacology

Background:

• Drug-induced linear IgA bullous dermatosis (LABD) is a rare blistering disease linked to various medications.
• Drug reaction with eosinophilia and systemic symptoms (DRESS) is a severe, potentially fatal drug hypersensitivity syndrome.
• Co-occurrence of LABD and DRESS is exceptionally uncommon.

Observation:

• A patient presented with fever and a generalized vesiculobullous eruption after initiating amlodipine and meloxicam.
• Laboratory findings included elevated liver function tests, leukocytosis, and eosinophilia.
• Histopathology revealed a sub-epidermal bulla with neutrophils; direct immunofluorescence showed IgA deposition at the dermal-epidermal junction.

Findings:

• The patient's presentation and biopsy results were consistent with an overlap between LABD and DRESS.
• The reaction was attributed to either amlodipine or meloxicam.
• This case highlights a rare concurrent presentation of two distinct drug-induced conditions.

Implications:

• Recognizing this rare overlap is critical for prompt diagnosis and management.
• Early intervention is essential due to the high mortality rate associated with DRESS syndrome.
• This case underscores the importance of considering multiple drug reactions when evaluating complex patient presentations.