dermatology Flashcards
what nail changes are seen in psoriasis
oncholysis
what is acanthosis nigricans associated with
hyperinsulinaemia states
e.g. PCOS
what is oncholysis
separation of the nail form the nail bed
management of seborrhoeic dermatitis
topical ketoconazole
what to give patient who has rosacea but with prominent flushing
topical brimonidine
newborn with flat purple lesion on cheek what is most likely diagnosis
port wine stain
where do pyogenic granulomas occur
at site of minor trauma e.g. splinter
where do amelanotic melanomas occur
on sole of foot
where are keloid scars most common
sternum
how to treat tinea versicolor
anti fungal - ketoconazole
what is alopecia areata
autoimmune condition caused localised well demarcated patches of hair loss
what is vitiligo
loss of melanocytes
conditions associated with vitiligo
- T1DM
- Addison disease
- pernicious anaemia
- alopecia areata
where are sebaceous cysts most commonly located
on the scalp
what is a precursor of pityriasis rosacea
viral upper respiratory tract infection
what does the rash look like in pityriasis rosacea
oval, scaly patches running parallel to the line of Langer
where does lichen sclerosis affect
genitalia of elderly women
management of lichen sclerosis
topical steroids and emollients
what is the rash like in erythema multiform
giant non itchy target lesions
what is rash like in erythema nodosum
nodular
management of pityriasis rosacea
self limiting
rash in impetigo
golden crusted skin lesions all around the mouth
what rash is associated with hot water bottles
erythema ab igne
what initial investigation to do if someone has erythema nodosum
tuberculosis
sarcoidosis
itchy scaly rash on palm of hands is
lichen Planus
management of lichen planus
potent steroid
- betamethasone
management of a dermatophyte nail infection
topical terbinafine
what is the diagnosis of shingles
clinical
diagnosis of ‘golden crusted skin lesion found around the mouth’
impetigo
management of impetigo
topical fusidic acid - 1st line
what rash follows a streptococcal infection
guttate psoriasis
management of keloid scar
intralesion corticosteroid injection
where is venous ulceration typically seen
above medial malleolus
history of loss of libido, impotence and red crusted lesions around anus is suggest of
zinc deficiency
cause of spider naevi
liver disease
pregnancy
combined oral contraceptive pill
pink or pearl coloured papule with central umbilication =
molluscs contagiosum
management of excess sweating
topical aluminium chloride
management of facial hirtuism
topical eflornithine
most common dermatosis in pregnancy is
atopic eruption of pregnancy
what bacteria contributes to the development of acne
propionibacterium acnes
what is associated with seborrhoeic dermatitis
HIV
side effect of lamotrigine
Steven Johnson syndrome
hair loss associated with chemotherapy is called
anagen effluvium
causative organism in pityriasis versicolor
malassezia
well-circumscribed annular erythematous plaques with an advanced scaly border and central clearing =
tinea corporis (ring worm)
what leg lesion is found in UC and crohns
pyoderma gangrenosum
small lesion with number of tiny blood vessels radiating from the middle
when pressed down on them they go white and they refill from the centre =
spider naevi
spider naevi are associated with
liver failure
pressure on lesion and it goes white them refills from the edge =
telangiectasia
sore throat, headache, fever, lymphadenopathy, sandpaper like rash, tongue looks red and bumpy =
Scarlett fever
management of rosacea
metronidazole
what is erythroderma
dermatological emergency when there is widespread erythema >90% of skin surface
A: dermatitis, psoriasis, pityriasis rubra pilaris
is urticarial rash itchy
yes
sudden eruption of seborrheic keratosis is called what and what is this a sign of
called Leser-Trelat sign
paraneoplastic process associated with gastric or colorectal adenocarcinoma
blisters on dorsal of hands that rupture easily to form erosions
blisters can heal to leave scars and cause hyperpigmentation and hypertrichosis (especially at top of cheek) =
porphyria cutanea tarda
management of porphyria cutanea tarda
avoid sunlight
phlebotomy (reduce iron levels)
anti malarial - chloroquine
pregnant women with widespread rash with peri umbilical sparing
polymorphic eruption of pregnancy
