How common is antiphospholipid syndrome?

How common is antiphospholipid syndrome?

While healthcare professionals and researchers don’t have exact numbers on the prevalence of the disorder, antiphospholipid syndrome is thought to be fairly common. Approximately 20% of people younger than 50 who have a stroke have antiphospholipid syndrome, and approximately 10% to 15% of individuals who experience recurrent miscarriages have antiphospholipid syndrome.