This book provides the reader with a comprehensive overview of the Antiphospholipid syndrome. One of the most important advances in rheumatology and connective tissue diseases of the last decade. It provides an explanation for many previously undefined conditions with no clear pathogenesis encompassing all subspeculations in internal medicine as well as obstetrics. Clotting problems leading to strokes and myocardial infarctions (in younger people) as well as a large variety of other syndromes such as chorea, hyproadrenalism, pulmonary problems are now being understood.