Skin infection

Pathway- Epidermis→ upper dermis→ deep dermis→ subcutaneous fat→ fascia→ muscle

Risk factor- Trauma, skin inflammation, edema due to impaired venous/lymphatic return, obesity, immunocompromised, skin infection



Site- Epidermis


Site- Upper dermis 

Pathogen- Beta-hemolytic streptococci

Characteristics- Clear demarcation between involved and uninvolved tissue, butterfly” involvement of the face. Involvement of the ear (Milian’s ear sign)


Site- Deeper dermis and subcutaneous fat

Pathogen- Beta-hemolytic streptococci, Staphylococcus Aureus, H.Influenza

Treatment- Newborn → ampicillin+3rd cephalosporin, <5y/o →3rd cephalosporin, Adult→oxacillin, Immunocompromised →oxacillin+aminoglycoside

4.Skin abscess

Site- Collection of pus within the dermis or subcutaneous space

Pathogen- S.Aureus

Complication- Bacteremia, endocarditis, osteomyelitis, metastatic infection, sepsis, and toxic shock syndrome

Published by Steve Johnson

I am a doctor who like to organise knowledges and share ideas with others. As a doctor, a lot of knowledges influx everyday and need some patient to organise and absorb. Here was my notes to share with you and hope to save your time to know it.

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