Cellulitis on Feet: Symptoms and What to Do

The affected skin may become red, warm, swollen and tender, with redness that expands beyond the original area. The foot can feel tight, and walking may be uncomfortable. A break in the skin can allow bacteria to enter; athlete's foot, a blister, a crack between the toes, an insect bite or a minor injury can provide that entry point. Fever or feeling unwell may occur as the infection develops. A foot rash has several possible causes, so a clinician may examine the skin, toes and sole rather than relying on appearance alone.

People with type 2 diabetes, reduced circulation, nerve loss or a weakened immune system may need especially prompt assessment because a foot infection can be harder to notice or heal.

Arrange a same-day medical assessment if cellulitis is suspected. Take any prescribed antibiotic exactly as directed and complete the course unless the prescriber changes it. Rest the foot, raise it when practical, keep the skin clean and dry, and cover any small break with a clean dressing. Do not squeeze, puncture or massage the swollen area. Avoid applying leftover creams or sharing medication. Marking the edge of redness can help you notice whether it is spreading, but it does not replace clinical review. Check the toes and spaces between them for cracks or peeling, and mention these findings during the visit.

Seek emergency help for rapidly spreading redness or swelling, severe or worsening pain, purple or blistered skin, numbness, confusion, faintness, breathing difficulty or a very high temperature. These signs can indicate a serious infection, including sepsis. Urgent assessment is also warranted when the foot is cold or pale, you cannot bear weight, pus is present, or you have diabetes and notice a new wound, colour change or loss of feeling. Do not wait for a routine appointment when symptoms are progressing.

Ask which findings support cellulitis, whether a wound or athlete's foot is the likely entry point, and how soon improvement should be checked. Ask how to protect the dressing, whether you should limit walking, and which changes mean you should return sooner. Tell the clinician about diabetes, circulation problems, allergies and medicines you take.