Infection and abscess after treatment

Reference material only. This article is general reference information, not clinical, medical or legal advice. It does not replace your clinic's own written emergency protocols, your clinical judgement, up-to-date professional guidance, or the emergency services. In an emergency, call 999 without delay. Every clinic remains responsible for its own emergency preparedness, training, equipment and drugs, and for acting within each practitioner's scope of competence and insurance.

Any procedure that breaks the skin can introduce infection. Most post-treatment infections are localised and treatable, but a minority progress to abscess, spreading cellulitis or, rarely, sepsis, which is a medical emergency.

Recognising it

• Increasing redness, heat, swelling and pain at or around the treated site, typically worsening after the first day or two rather than settling.
• Discharge or pus, a fluctuant lump suggesting an abscess, or spreading redness (cellulitis).
• Fever, feeling generally unwell, or tender local lymph nodes.
• Red flags for sepsis: confusion, very fast breathing or heart rate, mottled skin, or the patient looking severely unwell. Treat as an emergency and call 999.

Managing it

• Assess the patient and the site, photograph and document, and mark the edge of any spreading redness to track progression.
• Localised infection may need antibiotics, prescribed appropriately by a prescriber within their competence and current guidance.
• An abscess often needs drainage and specialist input; do not simply keep re-prescribing antibiotics for a collection.
• Filler-associated infection and suspected biofilm can be complex; consider hyaluronidase and specialist advice, and follow guidance such as ACE Group World.

Escalation

Refer urgently, or send to A&E, if infection is spreading rapidly, not responding to treatment, involves the central face or eye area, or if there is any sign of systemic illness or sepsis.

Prevention

Rigorous aseptic technique, skin preparation, single-use sterile equipment, correct product handling and clear aftercare advice all reduce risk. Tell patients how to spot early infection and how to contact you quickly.