Dermatology Flashcards
Mx seborrhoeic dermatitis scalp
topical 2% ketoconazole 1st line
which fungus causes seborrhoeic dermatitis?
Malassezia furfur
which conditions are associated with seborrhoeic dermatitis?
HIV
Parkinsons
Mx seborrhoeic dermatitis face/body
topical antifungal (e.g. ketoconazole)
topical steroids
which conditions are associated with vitiligo?
T1DM
Addisons
Autoimmune thyroid disorders
pernicious anaemia
alopecia areata
which phenomenon can vitiligo appear via trauma?
Koebner phenomenon
Mx vitiligo
sunblock
topical corticosteroids
+/- tacrolimus
where are keloid scars most common?
sternum
first line Mx urticaria
non sedating antihistamines e.g. loratidine/certirizine for up to 6 weeks
mx refractory urticaria
prednisolone
1st line Mx lichen planus
TO steroids
description of spider naevi
central red papule with surrounding capillaries which blanch on pressure
where are spider naevi almost always found?
upper part of body
which conditions are spider naevi associated with?
liver disease
what is the difference between bullous pemphigoid and pemphigus vulgaris
bullous pemphoigoud does not involve mucosa
pemphigus vulgaris does involve mucosa
1st line mx facial psoriasis
hydrocortisone 1% 1
1st line Mx rosacea with papules/pustules
topical ivermectin
features of rosacea
flushing (1st`)
telangiectasia
–> persistent erythema with papules + pustules
rhinophyma
blepharitis
which condition is dermatitis herpaiformis commonly seen in ?
coeliac disease
features of dermatitis herpetiformis
itchy, vesicular lesions on the extensor surfaces
2nd line Tx for dermatitis herpatiformis if gluten free diet has not imrpved
dapsone
Tx pityriasis versicolor
ketonazole shampoo
most common cause of tinea capitis in the UK
trichophyton tonsurans
Mx tinea capitis - tonsurans causative agent
PO antifungals e.g. terbinafine
Mx tinea capitis - microsporum causative agent
PO antifungals e.g griseofulvin
Mx tinea corporis
fluconazole
causative agent molluscum contagiasum
MCV - molluscum contagiasum virus
drugs which can precipitate psoriasis
beta blockers
lithium
antimalarials
NSAIDs
ACEi
WITHDRAWAL of steroids
cause of bullous pemphigoid
development of antibodies against henidesmosomal proteins BP180 + BP 230
findings skin biopsy bullous pemphigoid
immunofluoresnce - igG and C3 at dermoepidermal junction
Mx bullous pemphigoid
referral to derm who will start PO CCS
Mx of flexural psoriasis
topical steroid only
what is a curlings ulcer ?
stress ulcer which can occur with severe burns
first line Tx of scalp psoriasis
topical potent steroids
medical Mx of capillary haemangioma
propranolol
pemphoid gestationis vs polymorphic eruption of pregnancy
polymorphic eruption of pregnancy - no blisters
why refer keratocanthoma to dermatology urgently?
to ecxl SCC
difference between spider naevi and telangiectasia?
spider naevi refill from center when pressed
telangiectasia fill from edge
oral treatment of acne vulgaris in pregnancy?
oral erythromycin
appearance livedo reticularis
purplish, non-blanching, reticulated rash caused by obstruction of the capillaries resulting in swollen venules.
conditions associated with livedo reticularis
idiopathic (most common)
polyarteritis nodosa
systemic lupus erythematosus
cryoglobulinaemia
antiphospholipid syndrome
Ehlers-Danlos Syndrome
homocystinuria
what is telogen effluvium
loss and thinning of hair due to severe stress
Mx alopecia areata
topical corticosteroid + referral to derm
underlying pathogenesis dermatitis herpetiformis
formation of IgA antibodies –> deposition of IgA granulation
causes of scarring alopecia (5)
trauma/burns
radiotherapy
lichen planus
tinea capitis
discoid lupus
which cancer is tylosis associated with + which body part is affected
oesophageal ca
palms + soles
which type of malignancy is acquired icthyosis associated with
Hodgkins lymphoma
which type of malignancy is Acquired hypertrichosis lanuginosa associated with (2)
GI + lung Ca
which type of malignancy is Dermatomyositis assoc with (2)
ovarian and lung ca
which type of maliganncy is Erythema gyratum repens associated with\?
lung ca
which type of malignancy is Migratory thrombophlebitis associated with?
pancreatic ca
which type of malignancy is Necrolytic migratory erythema associated with?
glucagonoma
which type of malignancy is Pyoderma gangrenosum associated with
myeloproliferative disorders
which type of malignancy is Sweet’s syndrome associated with?
myelodysplasia
first line Mx hyperhidrosis
aluminium chloride
