Which of the following is a disease associated with the circulatory system?

A disease associated with the circulatory system refers specifically to conditions that affect blood flow, blood vessels, or the heart. CVA, or cerebrovascular accident, commonly known as a stroke, is directly related to the circulatory system. It occurs when there is a disruption of blood flow to the brain, which can happen due to a blocked or ruptured blood vessel. This can result in significant neurological impairment.

In contrast, multiple sclerosis is a neurological disease that affects the central nervous system, including the brain and spinal cord, but is not categorized as a circulatory issue. Epilepsy is a seizure disorder related to electrical disruptions in the brain, and Alzheimer’s disease is a form of dementia primarily affecting cognitive functions. Both of these conditions do not primarily involve the circulatory system in their pathology. Therefore, CVA is the only choice that fits the criteria of a disease directly associated with the circulatory system.