Acute generalized exanthematous pustulosis is a severe cutaneous adverse reaction characterized by the rapid onset of nonfollicular, sterile pustules on an erythematous base, typically accompanied by fever (≥38 °C), neutrophilia (7.0 × 10⁹/L), and characteristic histopathological features. This case report presents the first documented instance of acute generalized exanthematous pustulosis after hyaluronic acid viscosupplementation.
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