The aim of this book is to provide substantial information of antiphospholipid. This syndrome was first examined by Graham Hughes in the year 1983 as a condition associated with foetal losses or thromboses and antiphospholipid antibodies presence. Since then, there has been significant growth in knowledge regarding antiphospholipid antibodies characterization, their apparent and possible action, laboratory detection, clinical manifestations and treatment possibilities. This book offers a broad range of clinical manifestations contributed by renowned clinicians and researchers from across the globe possessing extensive practical experience in the field of management of diagnostics and treatment of antiphospholipid antibodies presence.