Wound Infection Differential Diagnosis
Single Most Likely Diagnosis
- Staphylococcus aureus infection: This is the most common cause of wound infections, particularly in acute wounds. Staphylococcus aureus is a common skin flora that can easily colonize and infect wounds, making it the single most likely diagnosis.
Other Likely Diagnoses
- Streptococcus pyogenes infection: This bacterium is another common cause of wound infections, especially in wounds that are exposed to the environment or have been contaminated with dirt or other foreign materials.
- Escherichia coli (E. coli) infection: E. coli is a common cause of wound infections, particularly in wounds that are contaminated with fecal matter or in patients with compromised immune systems.
- Pseudomonas aeruginosa infection: This bacterium is commonly found in moist environments and can infect wounds that are exposed to water or have high moisture levels.
- Polymicrobial infection: Many wound infections are caused by a combination of different bacteria, making polymicrobial infection a likely diagnosis.
Do Not Miss Diagnoses
- Necrotizing fasciitis: This is a life-threatening condition that requires prompt diagnosis and treatment. It is characterized by rapid progression of infection and tissue necrosis, and can be caused by a variety of bacteria, including Streptococcus pyogenes and Staphylococcus aureus.
- Gas gangrene: This is a rare but deadly condition caused by Clostridium perfringens, which can produce gas in tissues and lead to rapid tissue necrosis and death.
- Tetanus: This is a rare but potentially deadly condition caused by Clostridium tetani, which can produce a toxin that causes muscle rigidity and spasms.
Rare Diagnoses
- Mycobacterial infection: Mycobacteria, such as Mycobacterium tuberculosis, can cause wound infections, particularly in patients with compromised immune systems or those who have been exposed to contaminated water or soil.
- Fungal infection: Fungi, such as Candida or Aspergillus, can cause wound infections, particularly in patients with compromised immune systems or those who have been exposed to contaminated water or soil.
- Viral infection: Viruses, such as herpes simplex or varicella-zoster, can cause wound infections, particularly in patients with compromised immune systems or those who have been exposed to contaminated bodily fluids.