Skin and Soft Tissue Infections Caused by Gram-Negative Pathogens

Area of Science:

• Infectious Diseases
• Microbiology
• Dermatology

Background:

• Gram-negative bacteria are emerging as key pathogens in skin and soft tissue infections (SSTIs).
• These infections are common in specific contexts like burns, diabetic foot ulcers, and healthcare settings.
• Patients often have comorbidities, and infections are frequently polymicrobial.

Purpose of the Study:

• To highlight the increasing role of Gram-negative bacteria in SSTIs.
• To discuss diagnostic approaches and risk factors for Gram-negative involvement.
• To emphasize optimal management strategies for these infections.

Main Methods:

• Clinical diagnosis is primary for SSTIs.
• Microbiologic confirmation is typically pursued in complicated cases.
• Evaluation includes exposure history and host risk factors.

Main Results:

• Gram-negative bacteria are implicated in SSTIs related to water exposure, burns, diabetic foot, bites, trauma, injection drug use, and healthcare.
• Polymicrobial infections are common, particularly in patients with comorbidities.
• Early suspicion based on risk factors is key.

Conclusions:

• Gram-negative bacteria are important pathogens in various SSTIs.
• Diagnosis relies on clinical presentation, risk factors, and microbiologic data when needed.
• Effective management involves timely antimicrobial treatment and source control.