Definition

Noun: A chronic, progressive disease of the nervous system characterized by the widespread loss of the protective myelin sheath surrounding nerve fibers in the brain and spinal cord. This damage disrupts the normal flow of electrical impulses along the nerves, leading to a variety of neurological symptoms.

Usage

This is a medical term. It is used in formal, clinical, and scientific contexts to describe a specific neurological condition. It is synonymous with "multiple sclerosis."

Examples

• The patient was diagnosed with disseminated sclerosis after experiencing episodes of blurred vision and muscle weakness.
• Research into the causes of disseminated sclerosis is ongoing.
• Disseminated sclerosis can manifest with a wide range of symptoms, from numbness to difficulties with coordination.

Advanced Usage

• The term is often used in historical medical literature. In modern clinical practice, "multiple sclerosis (MS)" is the more commonly used term.
• It may appear in compound adjectives, e.g., "disseminated-sclerosis-like symptoms" (symptoms resembling those of the disease).

Variants and Related Words

• Multiple sclerosis (MS): The standard contemporary term for the same disease.
• Disseminate (verb): To spread or disperse widely. The disease name derives from the characteristic scattered (disseminated) areas of demyelination.
• Sclerosis (noun): Abnormal hardening of body tissue. In this context, it refers to the scar tissue (plaques or lesions) that forms where myelin is damaged.

Synonyms

• Multiple sclerosis (MS)
• Insular sclerosis (an older, less common term)

Notes

• Disseminated sclerosis is not an idiom or a phrasal verb. It is a fixed medical noun phrase.
• The condition is often abbreviated as MS after an initial full mention (e.g., "disseminated sclerosis (MS)").

Noun

1. a chronic progressive nervous disorder involving loss of myelin sheath around certain nerve fibers