Which condition is characterized by demyelination of the nervous system and often affects young adults?

Which condition is characterized by demyelination of the nervous system and often affects young adults?

• A. Meningitis
• B. Multiple Sclerosis
• C. Hydrocephalus
• D. Neuralgia

Answer: (B)

Demyelination of the nervous system in young adults is most characteristic of multiple sclerosis. In MS, the immune system targets the myelin sheath that insulates nerve fibers in the central nervous system. When myelin is damaged, nerve impulses slow or fail to propagate, leading to a variety of neurologic symptoms that can affect vision, movement, sensation, balance, and coordination. The onset often occurs in early adulthood, and many people experience episodes of new or worsening symptoms followed by partial or complete recovery—a relapsing-remitting pattern. Imaging and tests commonly show demyelinating plaques and, in cerebrospinal fluid, distinctive patterns like oligoclonal bands, supporting the diagnosis. Meningitis is an infection of the membranes covering the brain and spinal cord and typically presents with fever, neck stiffness, and confusion. Hydrocephalus involves buildup of cerebrospinal fluid causing increased pressure and head injury-like symptoms. Neuralgia refers to nerve pain without the widespread demyelinating process seen in MS.

Demyelination of the nervous system in young adults is most characteristic of multiple sclerosis. In MS, the immune system targets the myelin sheath that insulates nerve fibers in the central nervous system. When myelin is damaged, nerve impulses slow or fail to propagate, leading to a variety of neurologic symptoms that can affect vision, movement, sensation, balance, and coordination. The onset often occurs in early adulthood, and many people experience episodes of new or worsening symptoms followed by partial or complete recovery—a relapsing-remitting pattern. Imaging and tests commonly show demyelinating plaques and, in cerebrospinal fluid, distinctive patterns like oligoclonal bands, supporting the diagnosis.

Meningitis is an infection of the membranes covering the brain and spinal cord and typically presents with fever, neck stiffness, and confusion. Hydrocephalus involves buildup of cerebrospinal fluid causing increased pressure and head injury-like symptoms. Neuralgia refers to nerve pain without the widespread demyelinating process seen in MS.