derm terms ilm Flashcards
hyperkaratosis
thickening of stratum corneaum. this is the outermost layer of dead cells in the epidermis.
ballooning
intracellular edema in keratinocytes that causes them to separate. often caused by viral infection
orthokeratosis
thickening of stratum corneium (outermost layer of dead cells) without nuclear retention
parakeratosis
retained nuclei in the stratum corneum.
hypergranulosis
increase in granular layer
acanthosis
increasing thickness of epidermis
pallipionmatosis
mountain and valley patten in epidermis
Dyskeratosis
Premature keratinization of keratinocytes meaning that the keratinocytes undergo apoptosis in the basal or spinous llayer of the epidermis rather than the corneum
Acantholysis
falling apart of the kerationcytes. discohesion, looks messy gaps among cells.
spongiosis
INTER cellular edema. so edema in between kerationcytes.
Ballooning
INTRA cellular edema of keratinocytes. often associated with viral infection
exocytosis
white blood cells migrating to epidermis
erosion
stripping away of corneum
ulceration
complete loss of epidermis
vacuolization
bubbly appearance of epidermal basal layer
palisading
lining up of cells in a row
macule
small flat discoloration- can see but cant feel
patch
large flat discoloration like a bruise
papule
is a small bump like a wart. u can feel it. less than 1 cm
Nodule
a bump larger than 1 cm larger than papule.
plaque
large raised lesion that can be rough, white, scaly etc. the lesion is greater in length than it is tall.
coalescing nodules or papules may make up plaque.
vesicle
small blisters less than .5 cm with a clear fluid. like what u get with herpes
bulla
large blister with clear fluid. greater than vesicle so greater than .5 cm think contact dermatitis
pustule
pus filled raised lesion can be papular or nodular ex acne or bug bite
wheal
raised smooth lesion often with erythematous boarders and pale center skin unbroken. ie welt
scale
roughness at surface it can represent hyperkeratosis which is thickning of stratum corneum
crust
dried plsma at surface. looks yellowish. represents epithelial disruption
excoriation
loss of epidermis caused by scratching picking burns etc. ulceration is histological complete loss of epidermis
lichenification
leathery thickness of skin usually from constant scratching
telangiectasia
dilated capillaries visible through surface of skin
onycholysis
separation of nail from the bed
atropy
thinning of skin loss of rete ridges (projection of epidermis into dermis) occurs with age or long term cortiocsteriod use
acral
relating to extermities like fingers toes ears limbs
dermatomal
restriction to a dermatome which is an area of skin supplied by a single sensory nerve
extensor and flexural surface
extensor- skin of elbows and knees they are stretched when the joint is flexed
flexural- skin within the flexure of elbows and knees
interiginous
areas wheere skin touches other skin ie axillae
ballooning
intracellular edema in keratinocytes that causes them to separate. often caused by viral infection
hyperkaratosis
thickening of stratum corneaum. this is the outermost layer of dead cells in the epidermis.
orthokeratosis
thickening of stratum corneium (outermost layer of dead cells) without nuclear retention
parakeratosis
retained nuclei in the stratum corneum.
hypergranulosis
increase in granular layer
acanthosis
increasing thickness of epidermis
pallipionmatosis
mountain and valley patten in epidermis
ballooning
intracellular edema in keratinocytes that causes them to separate. often caused by viral infection
hyperkaratosis
thickening of stratum corneaum. this is the outermost layer of dead cells in the epidermis.
pallipionmatosis
mountain and valley patten in epidermis
acanthosis
increasing thickness of epidermis
hypergranulosis
increase in granular layer
parakeratosis
retained nuclei in the stratum corneum.
orthokeratosis
thickening of stratum corneium (outermost layer of dead cells) without nuclear retention