Arterial insufficiency occurs when the arteries cannot supply enough blood to meet the needs of the body's tissues. This condition is often caused by atherosclerosis, where fatty deposits build up in the arteries, narrowing them and reducing blood flow. Symptoms may include pain, cramping, or weakness in the affected areas, especially during physical activity. Diagnosis typically involves physical examinations and imaging tests to assess blood flow. Treatment options may include lifestyle changes, medications, or surgical procedures to improve circulation. Managing risk factors such as high blood pressure, diabetes, and smoking is crucial for preventing further complications related to arterial insufficiency.