Severe Skin and Soft Tissue Infections
Severe skin and soft tissue infections (SSTIs) go beyond ordinary cuts or superficial rashes. They penetrate into deeper layers of skin, fat, or muscle and can deteriorate rapidly without antibiotic treatment. Conditions in this group include cellulitis that spreads despite initial care, abscesses requiring drainage, and more serious entities such as necrotising fasciitis.
Key points
- Redness spreading beyond a wound’s edge, warm tightly swollen skin, or new blistering are signs that need urgent medical attention.
- A racing heartbeat, chills or fever alongside a wound can mean the infection is affecting the whole body, not just the skin.
- Clindamycin is commonly chosen for these infections because it covers both anaerobic bacteria and MRSA, alongside surgical drainage where pus has collected.
Warning signs that demand prompt attention
Redness that spreads beyond a wound edge, skin that feels warm and tightly swollen, or the appearance of blisters or dark discolouration are all reasons to seek care urgently. Fever, chills, or a racing heartbeat alongside a skin wound indicate the infection has begun affecting the whole body. In tropical climates, minor injuries can progress to severe SSTIs faster than in cooler climates, particularly where humidity is high and water exposure (flooding, rice paddies, coastal activities) is common.
The role of antibiotics in treatment
Severe SSTIs almost always require antibiotics. The choice depends on the likely bacteria involved. Many deep infections involve anaerobic organisms or bacteria such as MRSA alongside the more common streptococci. Clindamycin is active against a broad range of these pathogens and is frequently used for skin and soft tissue infections where anaerobic cover or MRSA activity is needed.
Surgical drainage of abscesses or debridement of necrotic tissue is often necessary alongside antibiotics; medicines alone cannot clear pockets of pus or dead tissue.