dermatology terms

bulla/bullae. what size are they usually?

large fluid filled blisters; > 5mm

vesicles. what size are they usually?

small fluid filled blisters; < 5mm

pap/papules. what size are they usually?

small palpable lesions; > 1cm

patch. what size are they usually?

solid flat non-palpable lesions > 1cm

macule. what size are they usually?

flat non-palpable lesions; ~1cm

pustule

elevated lesion filled with purulent discharge; usually small

nodule

elevated solid lesion with depth

annular

in a circle or ring shape

petechiae

tiny round pink or purple spots

purpura

bruise

cyst

nodule filled with purulent discharge; usually fluctuant

erythema/erythematous

red or red in description

violaceous

purple

pedunculated

lesion that has a stem

fluctuant

moveable

canthus

outer or inner corner of eye

medial

towards midline of body

lateral

away from midline of body

inferior

below

superior

above

distal

farthest point from origin

proximal

closest point of origin