Which combination of factors commonly contributes to diabetic foot disease?

• A. Sensory neuropathy, ischemia, and infection.
• B. Hypertension and dyslipidemia only.
• C. Visual impairment only.
• D. Dehydration and vascular disease.

Answer: (A)

The main concept here is that diabetic foot disease arises from a triad of problems—nerve damage, poor blood flow, and infection—that together drive ulcer formation and worsening.

Sensory neuropathy is typically present after long-standing high blood glucose and leads to loss of protective sensation. Because patients can’t feel minor injuries or pressure, wounds form and go unnoticed, allowing them to deepen.

Ischemia, meaning reduced blood flow to the feet, impairs healing and makes tissue more vulnerable to damage. Poor circulation means fewer immune cells reach the wound and less oxygen and nutrients get to the tissue, slowing recovery and letting infections set in or spread.

Infection often follows once a wound exists, and hyperglycemia can impair immune function, further increasing the risk and severity of infection. This combination—unrecognized injury, poor healing due to reduced blood supply, and infection—drives the progression of diabetic foot disease.

Hypertension and dyslipidemia are important cardiovascular risk factors but do not alone constitute the trio that directly causes diabetic foot ulcers. Visual impairment alone doesn’t account for the local tissue breakdown, and dehydration with vascular disease doesn’t capture the key neuropathic component central to diabetic foot pathology.