Dermatology Flashcards
what does configuration mean
how lesions are arranged
what does morphology mean
what the lesions look like
what nail changes can happen in psoriasis
pitting (depression of nail plate) and onycholyisis (separation of nail plate from bed)
what joins signs should be looked for in psoriasis
arthritis
what is hypertrichosis
excess hair growth
what is hirsutes
excessive hair growth in male pattern in women
what is purpura
redness caused by extravasation
what is petechia
smaller 1-2mm area of flat pupura
what is erythema (caused by)
redness caused by vascular dilation- blanches on pressure
will purpura blanche
no
what cause cause hyperpigmentation
increased melanin, haemosiderin, direct chemical staining
what is the difference between macule and papule
flat lesions of localised colour change
macule < 1cm
patch > 1cm
what is the difference between papule and nodule
raised lesions
papule < 0.5cm
nodule > 0.5cm
what is a maculopapular rash
has flat and elevated components
what is a plaque
raised lesion with raised edge and flatter surface
what is a wheal
raised lesion that is compressible- dermal swelling
what are vesicles and bulla
raised fluid filled lesions
vesicle <0.5cm
bulla >0.5cm
what is a cyst
raised nodule containing semi solid material
what is a pustule
pus filled raised lesion
what is a scale
accumulated fragments of keratin layer
what is a crust
dried exudate
what is lichenified
thickening which increased skin markings
what is a scar
normal tissue replaced by fibrous tissue
what are fissures
linear split inepidermis
what is atrophy
loss of epidermis (+/- dermis)
what is erosion
superficial break in epidermis
what is an ulcer
deeper break into dermis
what is umbilication
navel like notch or depression in the centre of a vesicle (doughnut, volcano)
presentation= eczema on one foot, red, scaley, itchy
fungus
presentation- red itchy circular spot that then spreads rapidly
fungus
is a basal cell papilloma malignant or benign
benign
is halo naevi malignant or benign
benign
what is annular grouping
lesions coming together to make cicles
what is confluent
poorly demarcated
psoriasis on the ….. eczema on the …..
psoriasis= back eczema= front
presentation- localised contact allergy in a dermatome
shingles
is shingles uni or bi lateral always
unilateral
