skin infections

Question 1

how is folliculitis treated

Answer 1

antibiotics

incision and drainage if abcess

Question 2

what is PVL

Answer 2

exotoxin forming b pores

Question 3

what extracutaneous symptoms can pvl cause

Answer 3

pneumonia
fascitiis
purpura fulminans

Question 4

how is pvl treated?

Answer 4

tetracycline

decolonisation
clorohexidane body wash

Question 5

difference between furuncle and carbuncle?

Answer 5

furuncle - abcess involving one follicle

carbuncle - many

Question 6

risk factors of acquiring pvl?

Answer 6

close contact 
conaminated items 
crowding 
clenliness
cuts and grazes

Question 7

what is pseudonomal folliculitis associated with

Answer 7

hot tubs pools and wet suits

Question 8

what is seen in pseudomonal folliculitis

Answer 8

diffuse truncal eruption

Question 9

what is cellulitis

Answer 9

infection of lower dermis and subcutaneous tissue

Question 10

symptoms of cellulitis

Answer 10

tender swellin

ill defined blanching erythma and oedema

Question 11

what happens in impetigo

Answer 11

exfoliative toxins a and b split the epidermis by targeting desmoglein 1

Question 12

what is ecthyma and what does it look like

Answer 12

deep impetigo

thick crust overlying a punch out ulceration, surrounded by erythema

Question 13

why cant ssss be cultured

Answer 13

infection is at distant site

Question 14

symptoms of toxic shock syndrome?

Answer 14

fever 
hypotension 
diffuse erythema 
involvement of systems 
erythema of mucous membranes 
low platelets

Question 15

what is erythrasma

Answer 15

infection of corynebacterium minurissimum

well demarcated round areas of scale and brown

Question 16

what is associated with touching contaminated raw meat or fish

Answer 16

erysipeloid

Question 17

what does an anthrax lesion look like

Answer 17

painless necrotic ulcer with oedema

Question 18

what is erysipelas

Answer 18

infection of deep dermis and subcutis

Question 19

first signs of erysipelas

Answer 19

malaise fever headache

Question 20

how does erysipelas present

Answer 20

fiery red plaque with demarcated border and cliff drop edge

Question 21

what causes scarlet fever

Answer 21

strep pyofenes toxin

blanching tiny pink red spots, sandpaper feel,

skin symptoms 24-48h after general malaise etc

Question 22

what is a sign of necrotising fasciitis

Answer 22

unusual amount of pain

caused by synergistic bacteria

need broad spectrum and dibridement

Question 23

what does a lyme disease lesion look like

Answer 23

annular erythma with halo

Question 24

how us tularaemia acquired

Answer 24

after handeling infected squirrels and rabbits, ticks, deerflies

Question 25

what causes ecthyma gangrenosum

Answer 25

pseudomonas aeguinosa | in neutropenic patients

Question 26

what does the primary syphillis infection look like

Answer 26

painless ulcer with firm indurated border | one week later, lymphadenopathy

Question 27

what does the secondary symphyllis infection look lik e

Answer 27

``` malaise fever headache pruritus loss of appetite ```

Question 28

what is a rare manifestation of secondary syphyllis

Answer 28

lues maligna

Question 29

what is seen in tertiary syphyllis

Answer 29

gumma skin lesions

Question 30

how is syphyllis treated

Answer 30

bezylpenicillin | oral tetracycline

Question 31

what is seen in lepromatous leprosy

Answer 31

multiple lesions | normal sensation and sweting

Question 32

what is seen in tuberculoid leprosy

Answer 32

solitary lesions | hairless, anhydrotic numb

Question 33

3 ways cutaneous tb can be introduced?

Answer 33

direct innoculation into skin spread via blood stream extension from underlying infective focus

Question 34

what causes molluscum contagiosum

Answer 34

poxvirus

Question 35

how do you catch hsv1

Answer 35

direct contact with contaminated saliva

Question 36

how do you catch hsv2

Answer 36

sexual contact

Question 37

when do herpes symptoms come

Answer 37

2-7 days after exposure

Question 38

what precedes a herpes rash

Answer 38

lymphadenopathy, malaise, anorexia, | burning and tingling

Question 39

what does a herpes rash look like

Answer 39

ppainful grouped vesicles ulcersations, scalloped boredder crusts over

Question 40

what may monomorphic punched out erosions be?

Answer 40

ecxema herpeticum - an emergency

Question 41

what can neonatal hsv lead to

Answer 41

encephalitis and neurological deficits

Question 42

what is hand foot and mouth caused by

Answer 42

cocksackie, echo | echo higher incidence of neurological involvement

Question 43

how does hand food and mouth present

Answer 43

red macules, grey elliptical vesicles, uclers on buccal mucosa

Question 44

what does gianotti crosti look like

Answer 44

a viral eruption causing acute symmetrical erythematous papular eruption on face, arms lets and buttoks of kids 1-3

Question 45

what is a slapped cheek rash then lacy rash caused by

Answer 45

erythema infectiosum parvovirus b19

Question 46

what are the symptoms of roseola infantum

Answer 46

2-5 days high fever | small pink papules on trunk and head for upto 2 days

Question 47

what causes orf

Answer 47

papapox virus | after exposure to sheep or goats

Question 48

what are dermophytes

Answer 48

fungi that require keratin for growth

Question 49

how does pityriasis vesicolour present

Answer 49

hypopigmentation, scale hyperpigmentation | begins during adolescence

Question 50

what is an id reaction

Answer 50

interface dermatitis | inflammatory reaction at distant sites from dermaphyte infection

Question 51

risk factors for aspergilliosis

Answer 51

neutropenia and corticosteroids

Question 52

skin presentatino of aspergillosis

Answer 52

well circumsised papiles with erythmatous halo and nectoric base

Question 53

how is murcomycosis treated

Answer 53

antifungals and excessive debridement

Question 54

how is scabies treated

Answer 54

permethrin | oral ivermectin