Derm Flashcards
erythema multiforme looks like
target lesions with erythema
erythema multiforme associated with
HSV
drug eruptions
mycoplasma pneumoniae
herpangina
virus causing painful mouth blisters
common in kids
coxsackie & echovirus
resolves itself
orf
parapoxvirus
caused by handling infected sheep
firm, fleshy nodule on hand commonly that can be red/blue
-> pustule -> crust over
cllears itself in 3-6weeks
Primary syphilis infection
chancre (painless ulcer)
local non-tender lymphadenopathy
secondary syphilis infection
systemic symptoms: fevers, lymphadenopathy
rash on trunk, palms and soles
buccal ‘snail track’ ulcers (30%)
condylomata lata (painless, warty lesions on the genitalia )
tertiary syphilis infection
gummas (granulomatous lesions of the skin and bones)
ascending aortic aneurysms
general paralysis of the insane
tabes dorsalis
Argyll-Robertson pupil
Investigations for syphilis
bloods
swab chancre for PCR
treponoma pallidum
syphilis
borrelia burgdorferi
lyme disease
early + late signs lyme disease
early: erythema migrans
late: heart block, nerve palsies, arthritis
necrotising fasciitis types
type 1 is caused by mixed anaerobes and aerobes (often occurs post-surgery in diabetics). This is the most common type
type 2 is caused by Streptococcus pyogenes
tuberous sclerosis non-derm signs
epilepsy
tuberous sclerosis tumours
periungal fibromas
facial angiofibromas
hamartomas aka angiomyolipomas
bone cysts
tuberous sclerosis skin
ash-leaf macules
shagreen patches
erythema infectiosum
slapped cheek, parvovirus b19
investigation for parvovirus b19
antibody test for parvovirus b19 IgM
NF1 tumours & skin
cafe-au-lait macuels
neurofibromas
azillary or inguinal freckling
optic glioma
lisch nodules
NF1 non-derm sign
learning difficulty
superficial melanoma site
trunk and limbs
acral/mucosal lentiginous melanoma site
acral: soles of feet, hands and nailbeds
lentigo maligna melanoma sites
sun damaged face/scalp/neck