My grandfather died because his aorta burst but a few weeks beforehand, he had rashes by his ankles. now my mom gets these rashes and they're getting worse. Should we be having her heart checked instead of her skin?
Have her put her feet up.
Edema does cause a rash below the knee that is red and itchy similar to hives. it will not cause an aortic rupture, but edema is a symptom of cardiac issues.
follow up with a doctor and explain the past family history.