NAIL SKIN DISORDERS TERMS PART A Flashcards
this is the dominant vessel
plantar digital artery
anastomose with opposite side dorsally forming arch
arterial arcades or arches
supplies proximal nail fold and proximal nail matrix
proximal arch
unencapulated nerve balls
vater-pacinian pressure receptors
meissner’s corpuscle
nail bed
highest concentration of free nerve endings
nail lips and folds
ventral skin surface of proximal nail fold
forms thin dorsal surface of nail plate
dorsal portion of the nail matrix
makes the bulk of nail plate
intermediate section of nail matrix
follows contour of distal phalanx
extends distally as lunula
ventral section of mail matrix
epithelial ridge beneath nail plate at the junction between the free edge and the skin of the nail bed aka nail quick
hyponychium
this is the seal between the nail plate and the hyponychium
onychodermal band
name this protein involved in the growth of the nail plate?
alpha keratin protein
name this condition
spontaneous shedding of the nail plate?
onychomadesis
this is a soluble positively charged protein capable of killing C. albicans with decreased levels in atopic eczema patients
cathelicidin
name this condition
hereditary onychocryptosis
- wider nail roots
- pincer nail deforimites
- develop near skeletal maturity
- nail plates are wider and shorter
- great toe mostly affected
primary IGTNs
name this condition
omega nail
-inherited type
acquired type
- CVA hemiparesis
- beta blocker
- psoriasis
pincer nails
name this condition
improper cutting narrow shoes rotated or Mal-aligned digits ungula labia hypertrophy pregnancy, aging medications
secondary IGTNs
name this condition
abnormal separation of nail plate from nail bed
nail bed hyperkeratosis causes distal election of nail plate
multiple nails
-psoriasis, fungus, sculpting
single nail
-trauma
onycholysis
name this type of onycholysis:
- medial lysis may exceed lateral onycholysis
- uniform spike length
transverse onycholysis
name this type of onycholysis:
- repeated shoe pressure triggers transverse onycholysis
- -short shoe syndrome
- –foot size exceeds shoe size
micro traumatic nail dystrophy
name this condition:
dermoscopy
-normally all capillary loops are the same length
systemic sclerosis
- capillary loop drops out
- proximal nail fold atrophy
- -retracted cuticles
scleroderma
name this condition:
any inflammation of the nail unit especially the nail folds
initial soreness of nail fold progresses to swelling and erythema
paronychia
name these lines
transverse symmetrical grooves
typically affects all nails
retrospective indicator of high fever or severe systemic illness
- measles
- zinc deficiency
- thumb and toe affected
- width of furrow corresponds to duration of illness
beau’s lines
name this condition:
nail biting
onychotillomania
name this condition:
uniform thickening
<0.2-3 mms
not distorted
onychauxsis
name this condition:
due to trauma
-3-15 mms thick
micro traumatic
-hallux rigidus
onychogryphosis
name this condition:
normal but elongated
hypertrophic nails
name this condition:
narrow longitudinal grooving
-small proximal nail fold tumor, cyst, wart or trauma
onychorrhexis
name this condition:
rare wider defect
2-5 mm wide with steep jagged edges
thumb or index finger
medial canaliform nail dystrophy
name this condition:
transverse grooves and pressure pockets
-habitual index finger pressure on nail matrix produces central transverse depressions or ripples
habit tic deformity
name this condition:
autosomal dominant overgrowth of all multiple nails
-twenty nail dystrophy
palmar plantar keratoderma
pachyonychia congenita
name this condition:
AKA racquet nails
nail plate is flattened, the end of the digit is widened and flattened
distal phalanx is abnormally short
width of the nail bed and nail plate is greater than their length
brachyonychia
name this condition:
nail matrix trauma
-parakeratosis
opaque white patches
punctate leukonychia
leukonychia
