1 - Derm - Introduction + Examination - Signs + Colour abnormalities Flashcards
Signs - ausplitz sign?
-nail pitting?
aus - pinpoint bleeding on scraping of scale -> psoriasis
nail - circular depressions -> psoriasis
Signs - hutchinsons sign?
nickolskys sign?
hutch - involvement of proximal nail fold in subungal malignant melanoma
nick - epidermis and dermis separation under sliding pressure -> +ve in pemphigus vulgaris, -ve in TEN (toxic epidermal necrolysis))
Signs
- wickham striae?
- dennie morgan?
- hertovs sign?
wick - fine light lines on red plaques and papules -> lichen planus
dennie - 2 additional creases in upper eyelid -> atopic eczema
hertov - thinning of outer 1/3 of eyebrow -> atopic eczema
common colour abnormalities
-jaundice?
carotenaemia?
j - most obvious in sclera
carotenaemia - similar to jaundice but SCLERA spared - excess carotene intake
common colour abnormalities
- haemochromatosis
- addisons disease
haem - slate grey discolouration
addisons - hyperpigmented creases, scars and mucosa
common colour abnormalities
albinism?
vitiligo?
albinism - white skin and pink irises
vitiligo - patchy loss of skin colour