Final answer:
Pale feet when lying down and reddish color when standing in a 52-year-old woman may point to peripheral vascular issues like venous insufficiency or peripheral artery disease, and medical advice is necessary.
Step-by-step explanation:
The symptoms described of pale feet when lying down and a reddish color when standing in a 52-year-old woman could be suggestive of peripheral vascular issues. This change in color can occur due to the effects of gravity on blood flow. When the patient lies down, the blood is not being pulled down into her feet, resulting in pallor. Upon standing, the blood rushes to the lower extremities as a result of gravity, possibly causing the reddish coloration. Conditions such as venous insufficiency or peripheral artery disease (PAD) could account for such changes. It is crucial for the woman to seek medical advice and undergo proper vascular examination to determine the underlying cause.