Severe pain out of proportion to what the skin shows, tenderness beyond the redness, and local numbness are the early signs of necrotising fasciitis, and the skin may look almost normal at first. Blood tests, imaging and scoring systems cannot reliably exclude it. If it is suspected, the diagnosis is made by a diagnostic incision to the fascia, followed by radical debridement and broad-spectrum antibiotics, without waiting for imaging or transfer.
- Suspect it when pain is far worse than the skin appearance suggests.
- Look for tenderness beyond the erythema and local reduced sensation.
- Do not let normal-looking skin, blood tests or imaging delay exploration.
- Give broad-spectrum antibiotics and take the patient to theatre urgently.
- Plan a second look within hours; debridement is rarely complete once.
Why it matters
Hours of delay turn a limb-saving operation into an amputation or a death.
Read the rest in the app
You have read your two free briefings this month. The app carries all 27 specialties, every morning, free — and this finding is waiting in it.
Scan to keep reading on your phone. No account needed to start.
Tomorrow morning, before your first patient
One edition a day for orthopaedics, written by the desk, every claim tied to its paper. Six minutes.
Get the app — free