What Causes Erysipelas?

The bacteria can pass through cracked skin, a cut, an insect bite, a scrape, or an ulcer. Toe-web cracks caused by athlete’s foot can provide an entry point even when the opening is easy to miss. The infection affects the upper layers of skin and nearby lymphatic vessels, which can make the area look bright red, swollen, warm, and raised with a clear edge. Fever, chills, tenderness, and feeling unwell may occur alongside the skin changes.

Erysipelas is not caused by poor hygiene alone. Conditions that damage the skin barrier or reduce fluid drainage from a limb can make infection easier to develop. A clinician may need to distinguish it from cellulitis, an allergic reaction, or another rash.

Arrange prompt medical assessment if you notice a rapidly spreading, hot, painful red area, especially on the face or leg. Treatment commonly involves prescription antibiotics selected for the suspected bacteria. Keep any wound clean and covered, avoid scratching, and do not share towels or footwear. If athlete’s foot is present, treating the fungal infection and drying the spaces between the toes can help reduce repeated skin breaks.

Seek urgent care for rapidly worsening redness, severe pain, high fever, confusion, faintness, blisters, purple or black skin, or redness near the eye. People with diabetes, poor circulation, lymphoedema, or a weakened immune system should seek advice early because infection can progress more quickly.

Ask which skin break may have allowed bacteria in, whether the infection is erysipelas or cellulitis, how to take the prescribed antibiotic, and what changes should prompt a return visit. Ask how to manage athlete’s foot or swelling if either may be contributing.