Final answer:
Rest pain is a symptom of peripheral artery disease (PAD) where an individual experiences pain in the legs when at rest after walking. It is caused by reduced blood flow due to narrowed arteries. Medical attention should be sought for rest pain.
Step-by-step explanation:
Rest pain is a symptom experienced by individuals with arterial occlusive disease, specifically peripheral artery disease (PAD). It is characterized by pain in the legs that occurs when the person is at rest, typically after walking. This pain is caused by reduced blood flow to the legs due to narrowed arteries. It is important to seek medical attention for rest pain, as it may be a sign of worsening PAD.