3. Neuralgias - results from damages of peripheral nerves
a) Causalgia - severe burning pain appearing 1 to 2 weeks after
the nerve injury associated with discoloration and
changes in the texture of the skin in the affected
area.
b) Reflex sympathetic dystrophies - occur after peripheral
nerve injury and is characterised by continuous
severe burning pain. Vasomotor changes are
present (vasodilatation vasoconstriction cool
cyanotic and edematous extremities).