G45.0: Vertebro-basilar artery syndrome

Vertebro-basilar artery syndrome (VBAS) is a medical condition that affects two major arteries in the back of the neck, known as the vertebral and basilar arteries. These arteries are responsible for supplying blood to the part of your brain that controls vision, balance, and other vital functions. VBAS occurs when the blood flow through these arteries is disrupted, often due to a blockage or narrowing. Symptoms usually include dizziness, difficulty walking, sudden falls, visual disturbances, or even loss of consciousness. This condition generally appears suddenly, often when you move your head in a certain way, like turning it to one side, extending, or rotating it. Any interruption of blood flow to the brain, even for a short time, can cause serious issues. Therefore, VBAS is considered a serious medical situation that requires immediate evaluation and care.