Osler-Weber-Rendau syndrome means hereditary hemorrhagic telangiectasia. It is a genetic disorder that leads to abnormal formation of blood vessels in the skin and mucous membranes.
Symptoms of Osler syndrome are frequent nosebleeds, red dots on the fingers and face, anemia, vomiting blood, blood in the stool, blood clotting, and fluid retention in the body. The syndrome is diagnosed with blood tests, imaging procedures and genetic diagnosis. The symptoms can be treated with medications and surgical procedures.