Final answer:
Smooth, shiny skin with no hair on an older adult's lower legs likely suggests arterial insufficiency, indicating poor blood circulation to the limbs.
Step-by-step explanation:
An older adult with smooth, shiny skin containing no hair on the lower legs is most likely presenting with a condition related to arterial insufficiency. The appearance of the skin in this manner suggests that there is poor blood circulation to the lower extremities. Oftentimes, a lack of arterial blood flow can lead to atrophic changes such as loss of hair, thinning of the skin, and a shiny appearance. It does not typically present with symptoms of venous insufficiency, which would more likely include swollen, twisted varicose veins and edema, as described in the figures depicting varicose veins and edema. It is also unlikely to be related to hyperthyroidism or dehydration based on the described clinical manifestation. As described in Figure 17.7.7, peripheral artery disease (PAD) is another condition that demonstrates decreased blood flow and may present with similar symptoms of pain and skin changes. This reinforces the suggestion that the finding of smooth, shiny, hairless skin is indicative of arterial insufficiency.