What is multiple sclerosis (MS)?

What is multiple sclerosis (MS)?

• A. A chronic joint disease.
• B. An autoimmune demyelinating disease of the central nervous system causing impaired nerve conduction and neurological disability.
• C. A chronic brain disorder.
• D. An acute infection.

Answer: (B)

Multiple sclerosis is an autoimmune condition in which the immune system attacks the myelin that insulates nerve fibers in the brain and spinal cord. When myelin is damaged, nerve signals travel more slowly or stop, so people experience a range of neurological symptoms depending on where the damage occurs—issues with vision, strength, balance, sensation, coordination, fatigue, or thinking. The damage may come in relapses with partial recovery or progress gradually over time, reflecting the varying course of the disease. It’s distinct from a chronic joint disease, a vague chronic brain disorder, or an acute infection because it specifically involves immune-mediated injury to CNS myelin and presents with episodes of neurological dysfunction.

Multiple sclerosis is an autoimmune condition in which the immune system attacks the myelin that insulates nerve fibers in the brain and spinal cord. When myelin is damaged, nerve signals travel more slowly or stop, so people experience a range of neurological symptoms depending on where the damage occurs—issues with vision, strength, balance, sensation, coordination, fatigue, or thinking. The damage may come in relapses with partial recovery or progress gradually over time, reflecting the varying course of the disease. It’s distinct from a chronic joint disease, a vague chronic brain disorder, or an acute infection because it specifically involves immune-mediated injury to CNS myelin and presents with episodes of neurological dysfunction.