Terms Flashcards
(24 cards)
What are comedones?
dilated hair follicle full of keritinaceous material i.e. a balckhead;
can be primary or secondary lesion
Define a macule
flat lesion <1 cm in diameter with pigment change
primary lesion
Patch
same as a macule but >1 cm in diameter
primary lesion
Papule
a cluster of coalescing papules, raised, often with a flat top
primary lesion
Pustule
Elevation of skin with an accumulation of pus
primary lesion
Vesicle
<1cm elevation of skin with clear fluid
primary lesion
Bulla
same as a vesicle but >1 cm.
primary lesion
Wheal
raised dermal lesion consisting of dermal edema
primary lesion
nodule
elevation of skin > 1 cm; Can also be a tumor
primary lesion
Erythema
redness of skin
primary lesion
Epidermal collarette
ring of lifting keratin in centripetal manner
secondary lesion
Erosion
defect in epidermis (ulcer)
Secondary lesion
Lichinification
thickening of epidermis due to chronic trauma and inflammation
secondary lesion
Scar
an area of fibrous tissue replacing damaged dermis
secondary lesion
Alopecia
lack of hair
primary or secondary lesion
scale
loose fragments of stratum corneum
primary or secondary lesion
follicular cast
plug of keratinaceous debris
primary or secondary lesion
Crust
dried exudate and cells adhered to the skin
primary or secondary lesion
Hyperpigmentation
increase in pigment of the skin *can be an indication of chronicity.
primary or secondary lesion
hypopigmentation
decrease in pigmentation of the skin
primary or secondary lesion
leukoderma
white skin
primary or secondary lesion
leukotrichia
white hair
primary or secondary lesion
fissure
long narrow opening made by cracking or splitting of the skin
secondary lesion
Trichoscopy
hair plucks for cytological evaluation
