Dermatology Flashcards
Plaque
- solid, plataeu-like
- scaly
- larger ( > 0.5cm)
Burrow
- wavy, threadlike tunnel excavated by parasite
Papule
- solid, elevated (palpable)
- less than 0.5cm (small)
What general term can you use to describe this shape?
Nummular
- coin shaped
- uniform morphology
Talengiectasia
- persistent dilatations of small capilaries
- non-pulsitile
- “spider veins”
Calcinosis
- deposits of calcium in dermis
- whittish nodules or plaques
Striae
- “stretch marks”
Crust
- “scab”
- hardened deposits of bodily fluid on surface of skin
- yellow-brown (serous)
- yellow green (purulent exudate)
- reddish black (hemorrhagic secretion)
Ulcer
- epidermis and dermis have been destroyed
- look for undermined edges (ulcer might be under that skin)
- look for rolled over edges –> won’t heal (need excision)
Wheal
- evanescent (disappears within 12-48hrs) swelling of skin
- hives
What term can you use to describe this feature?
Target
- target-like
- > 3 distinctive zones
Cyst
- Fibrous inner capsule/sac
- contains fluid
- have to remove entirety of the the fibrous capsule of the cyst or it will recur
Nodule
- solid, round, palpable
- larger ( > 0.5 cm)
Vesicle/Bulla
- vesicle - clear fluid filled, small
- bulla - clear fluid filled, larger
Papule
What term can you use to describe this feature?
Whorled
- marble cake
What general term can you use to describe this shape?
Polycyclic
- coalescing circles, rings or incomplete rings
Sinus
- tract connecting deep suppurative cavities
- have to stick an object/probe in there to see how far it goes & where it goes
Abscess
- localized accumulation of purulent materal deep to dermis
- pus not visible
- pink, erthematous, warm, tender, fluctuant nodule
- Tx: incise, drain, & pack it [antibiotics]
Excoriation
- surface excavations of epidermis that result from scratching
Macule
- flat (non-palpable)
- well-defined (usually)
- less than 1.0 cm in diameter (small)
Scale
- Flat plate, or flake in stratum corneum
- dead superficial epidermal cells
Erythema
- pink to red coloring of skin due to dilatation
- blanching - turns color [white] with pressure
What term can you use to describe this feature?
Serpiginous
- serpentine or snake-like
Pustule
- small
- circumscribed skin papules containing purulent material
Macule
Plaque
Patch
- flat area (non-palpable)
- larger ( > 1.0cm)
Keratoderma
- accumulation of scale in palms or soles
- yellowish thickening of skin
- acute case: can be sign of underlying disease (SSC, breast cancer, Hodgkin’s, and leukemia)
Purpura
- reddish-purple lesions
- non-blanching
- petachiae - purpura < 1 cm
What general term can you use to describe this shape?
Annular
- ring shaped
- raised, scaly, differing color
Fissure
- deep skin spit extending into dermis
- common in diabetics
- palms and soles were elasticity can decrease
Atrophy
- decreased skin thickeness due to skin thinning
- glossy, transparent, paper thin and wrinkled
Horn
- hyperkeratotics conical mass of cornified cells
- could be a squamous cell carcinoma (always excise and send to path)
What term can you use to describe the feature in A and B?
A. Group/Clustered
B. Scattered
What general term can you use to describe this shape?
Arcuate
- arc-shaped
Erosion
Lichenification
- reactive thickening of epidermis
- accentuated markings
- resemble tree bark
What general term can you use to describe this shape?
Linear
