Atypical Stroke-Like Presentation in a Critically-Ill Patient With Serratia marcescens Bullous Cellulitis.

Skin and soft-tissue infections are common in critically ill patients, especially with gram-positive bacteria such as Streptococcus or Staphylococcus species. However, it is imperative to consider gram-negative infections in atypical presentations of bullous cellulitis, where patients do not initially respond to common empiric therapy for skin infections. Serratia marcescens is a gram-negative organism that manifests in nosocomial settings due to its affinity for moisture-rich environments. This bacteria is often difficult to treat due to extensive antibiotic resistance, and thus treatment is generally catered towards culture sensitivity. Rarely, this bacteria is an infective agent of infective endocarditis. We present a case of a 44-year-old gentleman who presented with stroke-like symptoms and was found to have bullous cellulitis with deep wound cultures growing S. marcescens. This case report highlights an atypical, severe presentation, and aims to provide a literature review of this rare manifestation of S. marcescens in skin and soft-tissue infections. We intend to improve rapid diagnosis and proper treatment for future critically-ill patients with skin and soft-tissue infections.