# MRI revealed _____, inflammation of the protective covering of nerve fibers causing various neurological symptoms.

> source: MyMerci (mymerci.kr)  
> url: https://mymerci.kr/pages/nclex_q.php?qn_id=168477  
> language: ko  
> subject: Diseases of the nervous system

## 문제

MRI revealed _____, inflammation of the protective covering of nerve fibers causing various neurological symptoms.

## 보기

1. myelitis **✔ 정답**
2. neuritis
3. radiculitis
4. encephalitis
5. meningitis

**정답: 1**

## 해설

Myelitis is inflammation of the spinal cord's myelin sheath, the protective covering of nerve fibers. This inflammation can disrupt normal nerve signal transmission, leading to various neurological symptoms such as weakness, paralysis, sensory changes, and bowel/bladder dysfunction. The condition can be caused by autoimmune disorders, infections, or other inflammatory processes.

## 임상 시나리오

Myelitis
- Inflammation of spinal cord's myelin sheath
- Disrupts nerve signal transmission
- Symptoms: weakness, paralysis, sensory changes, bowel/bladder dysfunction
- Causes: autoimmune disorders, infections, inflammatory processes

Neuritis
- Inflammation of peripheral nerves
- Common types: optic neuritis, vestibular neuritis
- Symptoms: pain, numbness, tingling, weakness

Radiculitis
- Inflammation of nerve roots
- Common in lumbar/cervical spine
- Symptoms: radiating pain, numbness along nerve path

Encephalitis
- Brain tissue inflammation
- Causes: viral infections, autoimmune responses
- Symptoms: headache, fever, confusion, seizures

Meningitis
- Inflammation of meninges (brain/spinal cord membranes)
- Types: bacterial, viral, fungal
- Symptoms: stiff neck, fever, headache, photophobia

## 핵심 개념

- **myelitis** — inflammation of the spinal cord's myelin sheath that can cause weakness, paralysis, sensory changes, and bowel/bladder dysfunction
- **neuritis** — inflammation of a peripheral nerve that causes pain, weakness, and sensory disturbances in the affected area
- **radiculitis** — inflammation of a nerve root that typically causes radiating pain, numbness, and tingling along the affected nerve pathway
- **encephalitis** — inflammation of the brain tissue that can cause headache, fever, confusion, seizures, and altered consciousness
- **meningitis** — inflammation of the protective membranes covering the brain and spinal cord that causes severe headache, neck stiffness, and fever

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