Educational draft · awaiting clinical reviewUse Rapid for revision, not patient-care decisions. Check current national and local guidance and the BNF or BNFC before acting.
Cutaneous abscess and recurrent staphylococcal infection
Essential points for quick revision.
2 min synopsisUK scopeSources checked 27 Aug 2026Clinical review pending
!
Anatomy and physiology can make an abscess dangerous
Sepsis, rapidly progressive pain, crepitus, perineal necrosis, orbital involvement, deep hand infection or airway-adjacent swelling requires more than routine office drainage.
Action: Resuscitate, start exposure-appropriate intravenous antimicrobials and obtain immediate surgical or specialty source-control review.
Synopsis
Recognise a drainable collection, distinguish it from cellulitis and chronic follicular disease, perform or arrange safe source control, and investigate recurrent staphylococcal infection without indiscriminate antibiotics or decolonisation.
A cutaneous abscess is a focal pus collection: look for fluctuance, pointing, focal pain or spontaneous drainage within or beside cellulitis.
Incision and drainage is the key treatment for an accessible uncomplicated collection; antibiotics cannot reliably sterilise an undrained cavity.
Use ultrasound when depth or fluctuance is uncertain, particularly with obesity, early infection or important nearby anatomy.
Key red flags
Sepsis, necrotising features, facial or orbital danger triangle, deep hand or perineal disease, injection-related vascular compromise, severe immunosuppression, prosthetic material or inability to achieve safe analgesia and drainage requires urgent referral.
Danger-site collection
Periorbital, central facial, deep hand, breast, perineal or injection-related disease deserves lower specialist referral thresholds.
Investigation priorities
01
Point-of-care ultrasoundFirst step
Confirm fluid, measure depth and identify loculations or important adjacent structures.
Management branches
Accessible uncomplicated abscessDrain and review
A superficial collection is confirmed in a stable patient at a site suitable for local drainage.
Explain alternatives and obtain consent, provide adequate analgesia and asepsis, and collect pus as the cavity is opened.
Drain loculations and dress according to local practice, avoiding routine antibiotic use when source control is complete and no risk modifier exists.
Key medicines
Flucloxacillin capsulesTake 500 mg to 1 g orally four times daily for five to seven days when significant surrounding cellulitis warrants adjunctive treatment and MSSA is likely.
Chlorhexidine 4% washUse once daily for five days only as one component of a locally agreed staphylococcal decolonisation protocol, avoiding face, ears and mucosa.
National guidance is shown before implementation-dependent detail. Typical adult dose examples remain subject to patient factors, contraindications and the live BNF or specialist protocol. Source check completed 27 Aug 2026; clinical approval remains outstanding.
NHS skin abscessRecognition, drainage, antibiotic indications and urgent care.