What should you know about local cellulitis?

Cellulitis affects deeper skin and soft tissue, often after bacteria enter through a cut, cracked skin, insect bite, wound, or fungal infection such as athlete's foot. The affected area may feel hot, sore, tight, and swollen, with redness that expands over time. Fever or feeling unwell can occur when the infection is more active.

A clinician assesses the skin, checks how far redness has spread, and looks for an entry point or collection of pus. Local cellulitis is different from simple irritation, an allergy, or a bruise, so a changing rash should not be self-diagnosed from appearance alone.

Arrange same-day medical advice for suspected cellulitis, particularly when redness is spreading, pain is increasing, or swelling limits movement. Treatment may require prescribed antibiotics; the choice depends on the site, severity, allergies, and other health factors. Keep the area clean, avoid squeezing it, rest the affected limb when practical, and mark the edge of redness only if a clinician recommends monitoring its spread.

Mention diabetes, immune problems, recent surgery, animal bites, water exposure, or an infected wound. These details can alter assessment and treatment.

Go to urgent care immediately for rapidly spreading redness, severe pain, confusion, faintness, breathing difficulty, a very high temperature, purple or blistered skin, or feeling suddenly very ill. These signs may indicate a serious infection or sepsis. Seek review if symptoms worsen after treatment, a pocket of pus develops, or fever persists.

Where did the infection enter the skin? Do I need antibiotics or drainage? How should I monitor the border, pain, and temperature? Could athlete's foot, diabetes, or another condition raise my risk of recurrence?