EXAM 2 - skin, MS Flashcards
Macule
< 1 cm flat non-palpable cirucumscribed discolored
Patch
>1 cm diameter flat non-palpable irregular shape discolored
Lichenification
thickened epidermis with accentuated skin lines cause by rubbing
ex: Lichen simplex chronicus
Scar
thin or thick fibrous tissue, following dermal injury
ex: burns, acne, keloid, herpes zoster, hidradenitis
Fissure
linear break in skin through epidermis and dermis
ex: hand dermatitis, intertrigo
ulcer
loss of epidermis and dermis, size varies
ex: decubitus or stasis ulcer, factitial ulcer, pyoderma gangrenosum
Petechia
< 1 cm circumscribed deposit of blood
ex: meningococcemia, Gonococcemia
From: strangulation; bleeding, liver disease
Annular
circular or ring shape
linear
line formation
arciform
arch-sharped
–drug reaction
Grouped
occurring closely together
*Herpes zoster
Gyrate
convoluted, serpiginous shape
*creeping eruption
Gentamyocin reaction; what is typically done to tx?
25mg iv benadryl
Seborrhea
Erythematous plaques with dry or oily scales
Location: head and trunk at sites of sebaceous gland, rich skin
Psoriasis
chronic, WELL DEMARCATED erythematous plaques w/silleve scale
Rosacea
papules; pustules; no comedones
Face
Seborrheic dermatitis
greasy adherent scale on coalescing macules, papules, and patches
scalp brow paranasal, postauricular, and flexural areas
Pityriasis rosacea
single 3-4cm oval plaque at onset that is followed by numerous smaller (<1cm) plaques w/collarette scale
-following natural skin lines of trunk
Lichen planus
Pruritic, polyangular, planar, purple papules; lacy surface
*Face
Impetigo
Thin, erythematous bullous vesicles or pustules that heal with HONEY-colored crust
*face, neck, extremities
herpes simplex
Expanding erosions with pain; an active vesicular border and scalloped periphery
**orolabial, genital
herpes zoster
sequential pain; crops of erythematoous papules and plaques followed by erosive blisters
*dermatomal distribution of thoracic, cranial, trigeminal, lumbar and sacral nerves
allergic contact dermatitis
vesicles, edema, redness and extreme pruritus
*exposure site; often hands, forearms, face and tops of feet
corn
occurring over a bony prominence
-feet
basal cell carinoma
pearly white, dome shaped papule with ulcerative CRUSTED, BLEEDing center
*face, scalp, ears, neck, sun exposed areas of trunk, extremities
squamous cell carcinoma
red, poorly defined base with RAISED, NECROTIC, crusted center
*head, neck, hands, sun exposed areas of skin
Melanoma
color and appearance vary considerably; pigmented and nonpigmented lesions
Paget’s disease
red, sharply demarcaated, irregularly outlined plaque and papule
breast, extramamary
Kaposi’s Scarcom
raised, oval, poorly demarcated, RUST or purplered patch, plaque or nodule
feet and lower legs
atopic dermatitis
Pruritic rash; erythematous, confluent papules and plaques affecting extensor areas; scarring
*hx of childhood eczema, allergic rhinitis, family hx of allergic rhinitis and eczema
seborrheic keratosis
variable color
waxy surface
stuck on appearance
*can occur anywhere
mole
clusters of nevus cells arranged at various levels in the skin
*anywhere; sun-exposed areas
keloid
large, raised scar that extends into adjacent normal skin
*anterior chest, shoulders, neck
Dysplastic nevus
multiple, atypical nevi with increased incidence of melanoma
*anywhere, trunk and UE’s