What about cerebral infarction of unknown cause?

The most common cause of cerebral infarction is cerebral atherosclerosis, but there are also some rare causes of cerebral infarction. First, vasculitis. Here to be divided into infectious vasculitis and autoimmune vasculitis, pay attention to which screening is. Second, infectious endocarditis. Third, occurred in many young people who are more hidden patent foramen ovale. Patent foramen ovale ordinary cardiac ultrasound can not be found, need to do bubble test to find, many young people are hidden patent foramen soft. Patients with tumor this hypercoagulable state can also show cerebral infarction, in short, rare causes of cerebral infarction or many, to further combine clinical and other auxiliary examination results, to find this rare cause of better prevention and treatment.