What is the typical pathophysiology agent responsible for cellulitis?

Cellulitis is usually caused by bacterial infections, and the primary pathogens responsible for this skin and soft tissue infection are commonly Streptococcus and Staphylococcus species. Staphylococcus aureus, particularly in its methicillin-resistant form (MRSA), is a frequent causative agent of cellulitis due to its prevalence on the skin and ability to penetrate the dermal layers, especially through breaks in the skin such as cuts or abrasions.

The infection typically leads to inflammation, redness, warmth, and swelling in the affected area, often accompanied by systemic symptoms like fever. While other bacteria can cause cellulitis, Staphylococcus aureus is particularly important due to its virulence factors that promote infection and its increasing resistance patterns, making it a leading concern in clinical practice.

Streptococcus pneumoniae is more commonly associated with respiratory infections rather than skin infections like cellulitis. Escherichia coli is usually linked to infections in the urinary tract or gastrointestinal tract rather than being the typical agent of cellulitis. Borrelia burgdorferi is the causative agent of Lyme disease, which may cause skin manifestations but is not the typical pathogen responsible for cellulitis. Therefore, Staphylococcus aureus stands out as the most common and