Which condition is associated with a blockage of blood supply to the brain?

The condition that is associated with a blockage of blood supply to the brain is a stroke. A stroke occurs when there is an interruption of the blood flow to the brain, which can be caused by a blockage in a blood vessel, known as an ischemic stroke, or by a rupture of a blood vessel, leading to bleeding in or around the brain, known as a hemorrhagic stroke. This lack of blood supply results in the brain not receiving enough oxygen and nutrients, which can lead to brain cell damage or death, resulting in loss of functions controlled by that area of the brain.

Understanding the nature of strokes is critical, as they can lead to significant disabilities and are considered medical emergencies. The correct identification of stroke as a blockage condition highlights the importance of recognizing stroke symptoms early to initiate prompt medical intervention, which is crucial for improving outcomes for individuals affected by a stroke.

Other conditions listed, such as Post-Traumatic Stress Disorder, Pervasive Developmental Disorder, and Williams Syndrome, do not involve blockages of blood supply to the brain and are primarily psychiatric or developmental disorders rather than acute medical emergencies linked to blood flow.