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Flashcards in Dermatomes Deck (22)
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Neuritis

Inflammation of the nerve

Mainly the sheath and CT are affected (but not the axon)

Constant dull pain.

Can lead to paresthesia/dyesthesia

1

Neuralgia

Pain of the nerve.

Recurrent paroxysmal excruciating pain along nerve.

Has "trigger zone" (area that causes attack when stimulated). Usually area of skin supplied by the nerve.

Commonly trigeminal and intercostal nerves (and phrenic, lumbar, brachial and sciatic).

2

Intercostal neuralgia

Affects intercostal nerves that travel between internal and innermost intercostal muscles.

3

What virus causes shingles?

Varicella-zoster. /herpes zoster

4

What nerves are affected by shingles?

Dormant in sensory ganglia of cranial and spinal nerves.

Spreads along spinal and peripheral nerves.

Demyelination and degeneration.

5

Neuroma

Tumour composed of nerve cells.

After damage to peripheral nerve, regenerating fibres can grow randomly, and as a clumped mass (because they can't penetrate scar tissue).

6

Paroxysmal

Intermittent.

7

Dermatome: C1-2

Top of head

8

Dermatome: C2

Side of head, above ears

9

Dermatome: C3

Side of neck

10

Dermatome: C4

Shoulder

11

Dermatome: C5

Upper Lateral arm

12

Dermatome: C6

Lateral arm

13

Dermatome: C7

Arm, middle hand

14

Dermatome: C8

Medial hand, arm

15

Dermatome: L1

Lateral hip

16

Dermatome: L2

Antero-Medial thigh

Sacrum

17

Dermatome: L3

Median thigh, knee, calf

Sacrum

18

Dermatome; L4

Lateral shin, medial foot, big toe

19

Dermatome: L5

Top of foot
On sole digits 1-3, medial ball

20

Dermatome: S1

Plantar foot digits 3-4, antero-lateral portion

21

Dermatome: S1-2

Heel of foot.