8.1 Skin Infections

Question 1

HSV commonly seen where?

Answer 1

Lip

Tingling sensation before blisters

Question 2

Clues to dx HSV?

Answer 2

Lesions grouped
Lesions coalesce
Geographical pattern
Edge is scalloped

Question 3

If HSV on newborn scalp what to watch out for?

Answer 3

Systemic involvement, medical emergency

Question 4

Punched out lesions can be indicative of?

Answer 4

HSV erosions
Haemorrhaging
May crust
Punched out

Question 5

Another clue for HSV infection around skin?

Answer 5

SWELLING

Along with punched out lesions

Question 6

What is HSV inside mouth?

Answer 6

Hermetic gingivostomatitis

Swelling of cheek, airway compromise

Question 7

What is you get HSV with someone with eczema?

Answer 7

Eczema herpeticum

Question 8

How to treat Eczema herpeticum?

Answer 8

Oral acyclovir

Question 9

Dose of acyclovir for children?

Answer 9

10mg/kg
5times/day
10days

Question 10

What is herpetic whitlow?

Answer 10

Dentists no gloves, repeated intermittent herpetic infection in same place

Question 11

HSV chronic ulcer happens to who usually?

Answer 11

Immune deficiency

Question 12

Children with zoster present how?

Answer 12

Multiple dermatomes
No neuralgia
Not immunosuppression

Question 13

Children with zoster, time window for anti-virals?

Answer 13

Within 72 hours

Question 14

When do you have to admit a child for zoster?

Answer 14

If in trigeminal nerve distribution, ophthalmic complications,
IV acyclovir

Question 15

Viral warts caused by?

Answer 15

Papilloma virus

Question 16

Papilloma virus treatment?

Answer 16

• Usu. resolve spontaneously
• keratolytic agents
• oral cimetidine
• cryotherapy

Question 17

Are viral warts infectious?

Answer 17

Yes

Question 18

Plantar warts treatment?

Answer 18

Formalin
Peel back skin to expose
3/12

Question 19

Planar warts Rx?

Answer 19

0.05% topical retinoids acid for 3/12

Question 20

Where do you see Filiform warts? Rx?

Answer 20

Mucocutaneous junctions

Rx with diathermy

Question 21

Perineal warts in a child, need to think?

Answer 21

?child abuse

Question 22

What happens when you use diathermy for warts on a cutaneous surface?

Answer 22

Ring of recurrence

Question 23

When is it appropriate to use diathermy for warts?

Answer 23

Only on mucosal surfaces

Question 24

Subuncal warts worry?

Answer 24

Once treated nail will go back to normal because warts only affect the epidermis

Question 25

Molluscum contagiosum looks like?

Answer 25

Pearly Papules with umbilical top

Question 26

Molluscum contagiosum is what kind of virus?

Answer 26

Pox

Question 27

Molluscum contagiosum how transmitted?

Answer 27

Swimming pools | Warm water

Question 28

Molluscum contagiosum treatment?

Answer 28

``` No warm water baths Shower No swimming No sponge/washer For 2-4 weeks ```

Question 29

Molluscum contagiosum treatment large lesions?

Answer 29

Physically remove/deroof Expose the white bit Remove it. Must remove all of them

Question 30

Tell tale sign of Molluscum contagiosum?

Answer 30

Central punctum

Question 31

Impetigo lesions look how?

Answer 31

Honey coloured crusty cornflake-like lesions

Question 32

Impetigo caused by?

Answer 32

Staph aureus

Question 33

If Impetigo is large and flat?

Answer 33

Bulbous impetigo

Question 34

Impetigo deeper?

Answer 34

Boils and abscesses

Question 35

What is scalded skin syndrome?

Answer 35

Staph aureus makes a toxin, looks like a burn

Question 36

Who are at risk for scalded skin syndrome?

Answer 36

-children under 5 and neonates most at risk

Question 37

How to differentiate scalded skin syndrome?

Answer 37

No mucosal involvement

Question 38

How to treat perinanal group A strep pyogenes?

Answer 38

Oral Abx, not topical

Question 39

How does perinatal strep pyogenes present?

Answer 39

Very painful Baby doesn’t want to poo Overflow incontinence

Question 40

What does tinea lesions look like?

Answer 40

Annular lesions on skin

Question 41

Any annular lesions, think of?

Answer 41

Fungal until proven otherwise

Question 42

How to dx tinea?

Answer 42

Skin scraping of active edge

Question 43

tinea vector?

Answer 43

Cats, guinea pigs, dogs, rabbits

Question 44

tinea Rx? Simple

Answer 44

Topical lamisil

Question 45

Eczema and psoriasis distribution?

Answer 45

Symmetrical

Question 46

Any Assymetrical lesion, think of?

Answer 46

?Tinea

Question 47

If there’s a rash you’ve never seen, only one leg, doesn’t look like eczema, no psoriasis. What should you think of?

Answer 47

TINEA incognito (not annular cause treated with steroids)

Question 48

What is mainstay treatment for tinea capitis?

Answer 48

Oral antifungals

Question 49

Ectothrix vs. endothrix in tinea capitis looks different how?

Answer 49

Fungal spores inside hair follicle vs. outside hair follicle | Endothrix: black dot tinea

Question 50

What is a Kerion?

Answer 50

Inflammatory tinea Boggy swelling, loss of hair Child is Systemically well Lots of scarring

Question 51

Kerion Rx?

Answer 51

Oral antifungal for 3 months

Question 52

What is tinea versicolor?

Answer 52

Cause by mall Essex is yeast

Question 53

Tinea versicolor looks how?

Answer 53

Hyperpigmented in fair skinned | Hypopigmented in dark skinned

Question 54

Tinea versicolor infectious?

Answer 54

Yes

Question 55

Scabies most prominent symptom? Burrows?

Answer 55

Incredible itch Rarely burrows in kids Less interdigital

Question 56

Where scabies in kids present?

Answer 56

Soles of feet | Palms of hands

Question 57

Scabies Rx?

Answer 57

Full body Permethrin cream for 2/52 | WHOLE family

Question 58

If a child under 1 has dermographism, then they have?

Answer 58

Scabies until proven otherwise