Definition
A necrotising genital or perineal infection that can progress within hours.
Symptoms
Severe or disproportionate pain, swelling, fever and discoloured skin; early signs can be subtle.
How it may be discovered
Perineal infection, wound or abscess, particularly with diabetes or immunosuppression.
When to seek care
An immediate emergency when suspected; do not wait for black skin to appear.
Investigations and tests
Immediate examination and severity assessment; imaging only if it does not delay treatment.
Reaching a diagnosis
Diagnosis is primarily clinical and may be confirmed during surgery.
Treatment options
Urgent removal of affected tissue, intravenous antibiotics and intensive support when needed; repeat surgery may be necessary.
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