Vertebral artery occlusion is a type of Vertebrobasilar Disease (VBD) or Vertebrobasilar Insufficiency (VBI) that occurs when there is inadequate blood flow to the rear section of the brain. This part of the brain is responsible for important functions such as coordination, vision, balance, consciousness, and more. The region is supplied by two separate vertebral arteries that originate from the basilar artery. However, over time, plaque buildup caused by atherosclerosis can lead to a blockage in these arteries.
An ischemic event, which refers to a temporary blockage or severe restriction of blood flow, can have serious consequences. Vertebral artery occlusions are considered extremely serious because they can lead to a transient ischemic attack (TIA), also known as a “mini-stroke,” or even a full-blown stroke. However, there are warning signs and symptoms that can help identify the condition, as well as various treatments available for VBD.
Atherosclerosis: The Leading Cause of Vertebrobasilar Insufficiency
Atherosclerosis, a condition that affects every artery in the body, stands as the primary cause of vertebrobasilar insufficiency. However, it is more than just a cause; it is also a symptom that can manifest early on in its progression, long before the occurrence of a vertebral artery occlusion.
Understanding Vertigo and its Connection to Vertebrobasilar Insufficiency
Vertigo, a sensation of dizziness or spinning, can often occur without any apparent cause. However, in some cases, it may be a symptom of a condition known as vertebrobasilar insufficiency. This condition is commonly associated with a decrease in blood flow to the brain, and experiencing vertigo is often the primary indication of its presence.
It is crucial to take vertigo seriously and seek immediate medical attention when it arises, as it can be a sign of underlying health issues. When vertigo is caused by vertebrobasilar insufficiency, it can be triggered by simply turning the head to the side. This action temporarily blocks the contralateral vertebral artery, resulting in a reduction of blood flow to the brain.