Abstract
Antiphospholipid Syndrome (APS) is an autoimmune disease, where the immune system antibodies damage and attack the body's own cells and tissues. Antibodies are proteins that protect the body against infections. Cells are damaged when these autoantibodies attack the phospholipids causing blood clots in the veins and arteries. An individual is diagnosed with APS if tested positive for autoantibodies and have a history of autoimmune diseases. Here, the case of a 33-year-old Saudi male is being reported, who was diagnosed with APS, treated with warfarin. The available knowledge about this disease and its relevance to the symptoms of the patient was also summerised.