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Every stage raises its own question. If you can tell this site which stage you are in, the next page it writes can start closer to where you are.
Name the stage you are at
Say whether you are watching a leg, an artery or a pelvic vein problem. Say what has changed since you first noticed it, and what you expect to face next. The form on this page is the place to put it in writing.
Reading that helps you describe it
Published pages can sharpen the words you use. The my.clevelandclinic.org overview of peripheral artery disease (PAD) is one starting point. The NHLBI, NIH page on how peripheral artery disease is diagnosed names the testing stage.
Two more pages to read
The my.clevelandclinic.org site explains claudication, its symptoms and treatment on its own page. The NHLBI, NIH also publishes a page on what peripheral artery disease is, which is a plain place to begin if the vocabulary is new.