complex regional pain syndrome Flashcards
CRPS typically affects what nerve?
the ulnar nerve
CRPS maj risk factor is a
distal radius fracture
hypertrichosis:
abnormal hair growth that occurs in response to an irritated cutaneous nerve
can children get CRPS
yes but children under 5 and elderly rarely get CRPS
CRPS s/s 1 - 3
prolonged or excessive pain out of proportion to injury
continuous throbbing pain
sensation of burning, stinging, tingling, numbness squeezing
CRPS s/s 4-6
sensitivity to heat or cold
swelling
changes in skin temperature - sweaty of cold at times
temps may vary
changes in skin texture, which may become tender thin or shiny in the affected
CRPS s/s 9-12
inflammation
skin color changes
stiffness
abnormal hair growth
CRPS s/s 13-16
spasms in blood vessels and muscle of the extremities
osteopenia
insomnia/ emotional disturbances
CRPS last two:
atrophy
dystonia/ motor planning difficulty
hyperathia:
abnormal painful reactions to a stimulus (umbrella term)
allodynia:
pain in specific dermatome distribution that is the result of stimulus that is not normally painful
hyperaglesia
an increased sensitivity to pain, may be caused by damage to nociceptors or peripheral nerves. more extreme pain than allodynia
hyperesthesia
a condition that involves an abnormal increase in sensitive stimuli of the senses
vasomotor:
dilation and constriction of blood vessels
sudomotor
autonomic function associated with the sweat glands
trophic
changes in tissues, due to loss /reduction of nerve and / or blood supply (muscle atrophy, increased nail growth (hypertrichosis) changes in nails, increased hair growth
what causes CRPS:
we don’t know
how many types of CRPS are there?
two
type 1 CRPS:
occurs after an illness or injury that did not directly damage the peripheral nerves of the affected limb
type 2 CRPS:
there is an identifiable peripheral nerve injury
grade 1 :
algodystrophy - disruption of bone growth combine with sympathetic symptoms
grade 2:
sympathetic dystrophy without pain
grade 3
sympathetic maintained pain
how many grades are there of CRPS:
three
acute phase occurs
first 3 months
subacute phase
3 more months