Infection Flashcards
What is pityriasis rosea
post viral skin condition
solitary lesion known as a herald patch appears first and then there is truncal eruption of small pink oval lesions
each lesion has peripheral scale
Xmas tree distribution
management of pityriasis rosea
self limiting
topical steroids
phototherapy rarely if severe
What is pityriasis versicolor
yeast infection of the skin which can result in hyper/hypopigmented patched
what microbes affect the skin
bacterial - staph A, strep pyogenes, pseudomonas
viral - HSV, VZV, Orf
fungal - dermatophyte: trichophytum rubrum
yeast - malassezia, candida
what is folliculitis
inflammation of the hair follicles
what is furunculosis
acute deep infection of the hair follicles
what do you call infection of a single hair follicle
boil
what is a carbuncle
contiguous hair follicles that have become infected - multiple heads
cause of impetigo
Staph Aureus
what can cause folliculitis
Staph aureus
Malassezia yeast
features of impetigo
yellow coloured / honey crust
raw bright red appearance underneath
usually on the face and affects young children
cause of Bullous impetigo
Staph A exotoxin resulting in desquamation
what is SSSS
widespread Staph A infection resulting in lots of desquamation
children > adults
causes of cellulitis
staph aureus
strep pyogenes
what do you call infection of the dermis
cellulitis
features of cellulitis
unilateral hot tender advancing rash on lower limbs
signs of infection
absence of scale…
what is erysipelas
more superficial infection of the skin
peau d’orange and swollen appearance
what do you call infection of the subcutis and what is the management
nectrostising fasciitis
debridement and IV antibiotics
investigations for bacterial infection
swabs and sensitivities
Management of bacterial infection
topical fusidic acid / mupirocin
oral antibiotics
prevention of spread
IV antibiotics
Cause of viral warts
HPV 1-4
RF for viral infections
immunocompromised - HIV, steroids, biologics, genetics
cryotherapy is a good treatment option for peri ungal warts, true or flase
false, it can cause permanent damage to nail growth
salicylic acid is used instead
You must treat all viral warts, true or false
false, they are self limiting
but they are usually treated anyway
describe molluscum contagiosum
small umbilicated firm papules