Delayed-type drug hypersensitivity reactions in a tertiary adult allergy clinic: A 5-year cohort study.

The most common phenotype was maculopapular exanthem (n = 15, 45.5%), followed by fixed drug eruption (fixed drug eruption) (n = 8, 24.2%).

Six patients (18.2%) required hospitalization, four of whom were managed in an intensive care or burn unit.

Seventeen patients (51.5%) had a single likely culprit drug, while the remaining patients were taking multiple medications.

Antimicrobials (41.3%), particularly beta-lactam antibiotics, and nonsteroidal anti-inflammatory drugs (NSAIDs, 29.3%), were the most frequently implicated drug groups.