<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, Ive been experiencing poor circulation in my legs, feeling cold often, and even swelling in my legs. Recently, Ive also been coughing up blood. What could be the issue?  <response>: Based on the symptoms youve described, its possible that you have peripheral arterial disease. This condition occurs when there is a blockage or narrowing of the arteries in your legs, which can cause poor circulation and lymphedema. The feeling of coldness could be a result of reduced blood flow in your extremities. And, hemoptysis, or coughing up blood, may occur as a result of the reduced blood flow in the lungs. 