Introduction to Dermatology Flashcards
(18 cards)
What is a papule?
palpable, raised primary skin lesion that has varying degrees of firmness and is less than 5 mm
What is a nodule?
palpable, raised primary skin lesion that is over 1 cm in diameter
What is a macule?
small, non-palpable skin lesion
What is a patch?
larger, non-palpable skin lesion
What is a plaque? Give an example.
Raised, palpable large skin lesion.
Psoriasis is the classic “plaque” forming disease (very clear borders)
What is a vesicle?
small, fluid filled skin lesion
What is a bulla?
blister (larger, fluid filled skin lesion)
What is a pustule?
vesicle with pus inside
What is a telangiectasia?
dilated blood vessels (seen more commonly in women)
What is a spider angioma?
tiny areas of dilated blood vessels that blanch with pressure
- totally benign in children
- pregnant women commonly
- associated with alcoholism and liver disease
What is an ecchymosis? What might it indicate?
bruise (may indicate a coagulation defect)
What is a petechiae? What might it indicate
pinpoint extravasation of RBCs under the skin (does NOT blanch)
May indicate a platelet problem
What usually causes “scale”?
inflammation
What is an example of a disease that can cause crusting?
wide-spread venous stasis dermatitis
What is lichenification?
thickening of the skin due to repeated scratching of the skin
What are excoriations?
little holes in the skin due to repeated scratching
What are ulcers?
deep lesions that penetrate through the dermis
What does atrophy look like? What might cause it?
looks like leaked-out blisters (may be caused by steroid therapy)
