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What are the warning signs of a diabetic foot infection?

Warning signs include new or increasing redness, warmth, swelling, drainage, odor, skin breakdown, discoloration, or a wound that is enlarging. Fever, chills, confusion, or unexpectedly higher glucose can accompany a more serious infection. Because neuropathy can hide pain, any new diabetic foot wound should be assessed promptly.

Changes to inspect for every day

Look at the tops, soles, heels, sides, and between the toes. Use a mirror or caregiver help if needed. New blisters, cracks, callus with blood underneath, drainage on a sock, swelling, warmth, redness, or color change deserve attention even when the foot does not hurt.

Why pain may be absent

Diabetic neuropathy can reduce protective sensation, so infection or tissue damage may progress without noticeable pain. Poor circulation can also delay healing. Lack of pain is therefore not reassurance that a foot wound is minor.

What to do if signs appear

Stop pressure on the affected area, cover it with a clean dry dressing, and contact a clinician promptly. Do not walk barefoot, soak the foot, trim callus over the wound, or take leftover antibiotics. A clinician may assess depth, circulation, sensation, and whether testing or imaging is needed.

Emergency red flags

Seek emergency evaluation for a rapidly worsening foot or signs of systemic illness.

  • Rapidly spreading redness, swelling, discoloration, or severe pain
  • Blackening tissue, exposed bone, or a cold, blue, pale, or numb foot
  • Fever, shaking chills, confusion, faintness, or rapid breathing
  • Red streaks traveling up the foot or leg

Medical references

Call 877-545-1300 or request a provider to begin care. Healix360 serves Southern California and Nevada and accepts Medicare Part B and most major insurance plans.