Dermatology terms Flashcards
macule
flat, impalpable circumscribed area of skin with altered skin colour, less than 10mm
eg:freckle.
papule
small raised spot on skin, dome shaped, less than 5mm
eg: contact dermatits.
patch
similar to macule but larger than 10mm
plaque
raised area on skin formed by papules converging with scaly, silvery outing.
eg: psoriasis
nodule vs vesicle
nodule is a solid lesion with deeper skin involvement.
vesicle is a small fluid filled lesion eg: small blisters.
pustule vs bulla
pustule is similar to a vesicle with purulent matter.
bulla is a large fluid filled vesicle.
annular
ring shaped erythematous covering around central “clearing”
wheal
swelling with clear well defines edges
eg: insect bite.
discoid/ nummular
itchy, swollen, cracked oval shaped lesion.
comedone
pores or hair follicles blocked with bacteria, oil or dead skin forming bumps on skin. no inflammation.
eg: forehead acne.
alopecia
loss of hair.
can be patchy or diffuse.
hypertrichosis
hair growth on lesions.
hirsuitism
women with excess male like hair growth pattern.
koilonychia nails
spoon nails with depression that can hold liquid.
eg: iron deficiency anaemia.
pitting nails
tiny dents in nails eg: psoriasis, eczema, joint inflammation.