Spontaneous occlusion of the circle of Willis is a medical condition where the brain's blood supply is disrupted due to the blockage of an important artery. This condition can lead to serious consequences such as stroke, brain damage, and even death. Synonyms for this condition can include cerebral stroke, cerebral infarction, brain ischemia, and intracranial arterial occlusion. It is important to be aware of these synonyms, as a prompt diagnosis and treatment can make all the difference in preventing further damage to the brain. If you or someone you know experiences symptoms of spontaneous occlusion of the circle of Willis, seek immediate medical attention.