People with diabetes are more vulnerable to bacterial infections of the feet due to reduced immunity, poor circulation, and nerve damage. Even minor cuts, cracks, or blisters can become serious infections if left untreated, and in advanced cases, these infections may spread to deeper tissues, tendons, or bone (osteomyelitis).
Bacterial infections often begin when bacteria enter through a break in the skin. In diabetics, the body’s delayed healing response - especially when combined with peripheral neuropathy - means infections can go unnoticed and progress quickly. Common bacterial culprits include Staphylococcus aureus and Streptococcus species.
Warning signs include redness, swelling, warmth, foul-smelling discharge, and increased pain. In more serious cases, patients may develop fever or spreading redness (cellulitis). Your foot specialist will assess the extent of infection through a physical exam and may order wound cultures, blood work, or imaging (X-rays or MRI) to determine if deeper structures like bone are involved. Prompt diagnosis and treatment are essential to prevent complications.
