What is a common complication of untreated diabetes mellitus?

Diabetic foot ulcers are a significant complication of untreated diabetes mellitus due to the effects of prolonged hyperglycemia on circulation and nerve function. Individuals with diabetes may experience peripheral neuropathy, which reduces sensation in the feet, making them less aware of injuries or pressure, leading to unhealed wounds or infections. Additionally, diabetes can impair blood flow and lead to poor wound healing, making any cuts or blisters more likely to develop into ulcers. These complications can become severe, with the risk of infection and potential amputation if not managed properly.

While untreated diabetes can indeed lead to conditions like hypertension, water retention, and dehydration over time, the direct and frequent link between poorly managed blood sugar levels and foot ulcers makes this the most pertinent choice in the context of complications arising specifically from untreated diabetes.