Flashcards in Dermatomes Deck (22)
Inflammation of the nerve
Mainly the sheath and CT are affected (but not the axon)
Constant dull pain.
Can lead to paresthesia/dyesthesia
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).
Affects intercostal nerves that travel between internal and innermost intercostal muscles.
What virus causes shingles?
Varicella-zoster. /herpes zoster
What nerves are affected by shingles?
Dormant in sensory ganglia of cranial and spinal nerves.
Spreads along spinal and peripheral nerves.
Demyelination and degeneration.
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).
Top of head
Side of head, above ears
Side of neck
Upper Lateral arm
Arm, middle hand
Medial hand, arm
Median thigh, knee, calf
Lateral shin, medial foot, big toe
Top of foot
On sole digits 1-3, medial ball
Plantar foot digits 3-4, antero-lateral portion