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DR Medhat MRCP

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Diseases of the nerves<br />

• Def :<br />

- Inflammation or degeneration of the peripheral nerves&/or cranial nerves leading to<br />

impairment of conduction in these nerves leading to sensory,motor,painful &<br />

autonomic dysfunction.<br />

• Causes :<br />

Causes Examples Mainly<br />

sensory<br />

Hereditary 1. Charcot-Marie-Tooth<br />

syndrome.<br />

2. Friedrich`s ataxia. ++++<br />

3. HSMN (I,II).<br />

4. HSAN.<br />

5. Fabry`s disease<br />

Nutritional 1. Vit B12 .<br />

++++<br />

2. Vit B1(thiamine) ++++<br />

[beri beri].<br />

3. Niacin [Pellagra]. ++++<br />

Neoplastic 1. Paraneoplastic<br />

syndrome<br />

2. Paraproteinemia.<br />

Metabolic<br />

Infection<br />

Drugs<br />

3. Malignant infiltration.<br />

1. DM.<br />

2. Amyloidosis.<br />

3. Ureamia.<br />

4. Porphyria.<br />

Mainly<br />

motor<br />

++++<br />

++++<br />

++++ + +<br />

++++<br />

++++<br />

++++<br />

1. GBS/CIDP<br />

2. Diphteria<br />

3. Leprosy ++++<br />

1. Amiodarone.<br />

2. Metronidazole.<br />

3. Phenytoin.<br />

هام.‏Isoniazide .4<br />

5. Ethambutol<br />

Peripheral neuropathy<br />

+<br />

++++<br />

++++<br />

++++<br />

Autonomic Painful Mixed<br />

++++<br />

+<br />

+<br />

++++<br />

+<br />

+<br />

+<br />

++<br />

++<br />

++<br />

+(SM)<br />

++<br />

+<br />

+ (SM)<br />

109

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