Antibiotics for severe cellulitis

Cellulitis is a bacterial infection in deeper skin tissues. Severity is judged from the speed and area of spread, pain, fever or systemic illness, the affected body site, and health factors that make complications harder to control. Infection around an eye, over a joint, or in a limb with poor circulation deserves particular attention.

Antibiotic selection considers likely bacteria, drug allergies, kidney function, recent antibiotic use, and any wound or exposure that changes the expected organisms. Blood tests or cultures may be taken, but treatment can begin before every result is available. Surgery may be needed if there is an abscess, dead tissue, or another source that medicine alone cannot resolve.

Follow the urgent-care or hospital plan and take every dose at the scheduled time. Elevating an affected arm or leg can reduce swelling when comfortable. Rest, drink fluids if permitted, and do not squeeze, cut, or drain the area yourself. A clinician may mark the edge of redness so that spread can be assessed rather than guessed.

Keep follow-up appointments even if discomfort begins to settle. Report vomiting that prevents doses, a new rash, severe diarrhoea, or other suspected medicine reactions. Management of an entry point such as cracked skin, a wound, or a fungal foot infection may help prevent another episode.

Call emergency services for confusion, collapse, severe breathlessness, blue or mottled skin, or rapidly deteriorating alertness. Immediate reassessment is also needed if redness spreads quickly, pain becomes extreme or seems out of proportion, blisters or dark skin appear, fever worsens, or infection approaches the eye. These findings can signal spreading infection or damage below the skin and should not wait for the next planned antibiotic dose.

Ask how the team will judge the response, whether imaging or drainage is being considered, and when intravenous treatment can change to tablets. Confirm who to contact if the marked redness expands and whether diabetes, circulation problems, swelling, or a skin break needs separate management.