How does antiphospholipid syndrome cause blood clots?

How does antiphospholipid syndrome cause blood clots?

If you have antiphospholipid syndrome, your immune system makes abnormal proteins called antiphospholipid antibodies in your blood. When the antibodies attack your phospholipids, cells can get damaged. This damage can contribute to the formation of blood clots in your arteries and veins. The cause of increased risk of blood clots for people who have antiphospholipid antibodies is not straight-forward and there are likely multiple factors involved. Some people have antiphospholipid antibodies but never have signs or symptoms of the antiphospholipid syndrome.