-
2 types of hair
vellus hair-covers most of the body
terminal hair-scalp, eyebrows, axillae, pubic area, face and chest
-
sebaceous glands
produce a protective lipid substance, sebum, that is secreted through hair follicles
-
2 types of sweat glands
eccrine-saline solution called sweat
apocrine-thick, milky secretion and open into hair follicles
-
function of skin
protection, prevents penetration, perception, temp, identification, communication, wound repair, absorption and excretion, production of vit. d
-
senile purpura
dark red discolored areas on elderly
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ABCDE
asymmetry, border irregularity, color variatin, diameter greater than 6 mm, elevation or enlargement
-
primary and secondary lesions
primary-develops on previously unaltered skin
secondary- when a lesion changes over time
-
degree of nails
- normal-160
- curved-160 or less
- early clubbing-180
-
cafe au lait spot
round or oval patches of light brown pigmentation-normal
-
harlequin color change
half red half white
-
erythema toxicum
rash that appears in first 3-4 days of life
called flea bite rash
no treatment needed
-
cutis marmorata
mottling in the trunk and extremities in response to room temp
-
physiologic jaundice
yellowing after 3rd or 4th day of life
-
carotenemia
yellow orange color in light pigmented skin with no yellowing of sclera or mucous membranes
-
seborrheic keratosis
do not become cancerous
lesions that are raised, thick, look crusted, scaly and warty
-
actinic (senile or solar) keratosis
lesions that are red tan scaly plaques that increase over the years to become raised and roughened
looks like dry skin around nose
-
-
sebaceous hyperplasia
raised yellow papules with a central depression
pebbly look
-
annular
- circular
- -begins in center and spreads to periphery
-
confluent
lesions run together (hives)
-
discrete
lesions that remain separate from eachother
-
gyrate
twisted, coiled and spiral snakelike
-
grouped
cluster of lesions
-
linear
scratch, streak, line or stripe
-
target
resembles iris of eye
-
zosteriform
linear arrangement along a unilateral nerve route
-
polycyclic
annular lesions grow together
-
macule
flat and circumscribed less than 1 cm
freckles
-
papule
- can feel
- less than 1 cm
- moles
-
patch
macules greater than 1 cm
-
-
nodule
solid, elevated, hard or soft, larger than 1 cm
-
wheal
slightly irregular shape
ex: mosq. bite
-
-
-
vesicle
elevated cavity containing free liquid
up to 1 cm
-
bulla
larger than 1 cm
usually single chambered
ex. blister
-
cyst
encapsuled fluid filled cavity into dermis or subq tissues
-
pustule
turbid fluid (pus) in cavity
-
fissure
linear crack with abrupt edges
-
erosion
scooped shallow depression
-
ulcer
deeper depression into dermis
-
excoriation
self inflicted abrasion, superficial
-
atrophic scar
depressed with lots of tissue, thinning of epidermis
-
lichenification
intense scratching
-
keloid
hypertrophic scar
elevated by excess scar tissue
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