A positive follicular test is associated with a cerebral infarction, which may be the result of a blockage of a cerebral blood vessel by an embolus formed in the circulation. A positive follicular test means that the microbubbles travel directly from the right atrium to the left atrium without filtration in the pulmonary circulation, and directly from the left atrium to the left ventricle, thus entering the aorta and the circulatory system. A positive test result is usually indicative of a patent foramen ovale or atrial septal defect between the right and left atria. In patients with a positive follicular test, the presence of emboli in the blood can lead to blockage of blood vessels in the brain, which can lead to cerebral infarction. Therefore, these patients need to pay attention to maintaining a healthy lifestyle, and at the same time can take anticoagulant drugs such as warfarin, or anti-platelet aggregation drugs such as aspirin, in order to prevent the formation of blood clots. It is recommended to consult a doctor for standardized diagnosis and treatment when necessary.