derm Flashcards
what blood test should be done in alopecia
TFTs - screen for other autoimmune conditions
salmon patch vs port wine stain
salmon patch - small, flat patches or pink or red skin with poorly defined borders, typically resolve by 18 months
port wine stain - capillary malformations that persist throughout life
nail changes of psoriatic arthritis
pitting
onycholysis
features of pityriasis rosea
herald patch (i.e. one rash that occurs followed by more)
may follow recent viral infection
it is self-limiting
mx of prominent telangiectasia in acne rosacea
laser therapy
what is oral terbinafine used for
onychomycosis - dermatophyte (fungal) nail infections
causes of spider naevi
liver disease
pregnancy
COCP
what infections can cause erythema nodosum
TB
streptococci
what occurs if acne rosacea affects the eyes
blepharitis
keratitis
conjunctivitis
in what type of burn are blisters seen
partial thickness (superficial dermal)
exacerbating factors of psoriasis
BLANQ Beta blockers Lithium Alcohol NSAIDs Quines
when should IV fluids be given for burns
adults - partial or full thickness burns that cover >=15% of body surface area
children - burns that cover >=10% of BSA
mx of guttate psoriasis
reassurance and topical treatment if symptomatic
features of erysipelas
more superficial, limited version of celluliits
often has sharp well defined borders
caused by Streptococcus pyogenes
long-term mx of psoriasis
vitamin D analogue, Calcipotriol
steroids should not be used long term
features of eczema herpeticum
seen in children with atopic eczema
monomorphic punched-out circular, depressed, ulcerated lesions that are 1-3 mm in diameter
potentially life threatening
features of pellagra
4 D's Dermatitis Diarrhoea Dementia Death
facial seborrhoeic dermatitis vs acne rosacea
seb derm - greasy itchy rash covering face (incl. nasolabial folds) and scalp
Acne rosacea - pustules and telangiectasia are prominent
mx of pyoderma gangrenosum
oral prednisolone (no matter how bad)
which ABX are used for acne vulgaris
tetracyclines
mx of bullus pemphigoid
oral corticosteroids
features of nodular melanoma
red or black lump
oozes or bleeds
found on sun-exposed skin
how to assess extent of burns
Wallace’s Rule of Nines - quick but not most accurate
Lund and Browder chart - most accurate
most aggressive type of melanoma
nodular melanoma - invade aggressively and metastasise early
mx of actinic keratoses
fluorouracil cream
topical diclofenac for mild AK
mx of acne rosacea
mild/moderate: topical metronidazole
severe/resistant: oral tetracycline
mx of seborrhoeic dermatitis
topical ketoconazole
causes of acanthosis nigricans
T2DM GI cancer obesity PCOS acromegaly Cushing's HYPOthyroidism COCP
derm condition associated w Parkinson’s
seborrhoeic dermatitis
