Cellulitis on the abdomen: signs and next steps

The affected area may become red or darker than the surrounding skin, warm, swollen, tender and increasingly painful. Borders can be poorly defined. Fever, chills or feeling generally unwell may accompany the skin changes.

Bacteria can enter through a cut, scratch, surgical wound, injection site, insect bite, cracked skin or an irritated fold, although the entry point is not always visible. Recent abdominal surgery, impaired circulation, lymphatic swelling, reduced immune function and poorly controlled diabetes can make infection harder to contain.

Cellulitis involves deeper tissue and is different from a mild surface rash. A clinician may inspect the skin, check vital signs and examine any wound or collection of pus. Testing depends on the appearance and how unwell the person is.

Arrange same-day medical advice when abdominal skin is hot, painful, swollen or spreading, particularly after surgery or a procedure. Take prescribed antibiotics exactly as directed and do not use leftover medication. Rest, drink fluids if you can and follow wound-care instructions.

A clinician may suggest marking the visible edge to track spread, but this should not delay reassessment when symptoms worsen. Avoid squeezing, puncturing or massaging the area. Keep any broken skin clean and tell the clinician about diabetes, immune-suppressing treatment, allergies and recent procedures.

Seek urgent medical care if redness or swelling spreads quickly, pain becomes severe or seems greater than the visible skin change, fever or shaking chills develop, or the person becomes confused, faint, unusually drowsy, breathless or unable to keep fluids down. Blisters, purple or black skin, numbness and rapidly worsening illness are emergency warning signs. These features can signal a deep or body-wide infection, including sepsis.

Ask what may have allowed bacteria into the skin, how improvement should look, when reassessment is needed and whether a wound or abscess requires separate treatment. Confirm what to do if a dose is missed, which side effects need attention and how to protect the skin after recovery.