2/14 Bacterial Skin Infections Extra Pics Flashcards Preview

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Flashcards in 2/14 Bacterial Skin Infections Extra Pics Deck (25):
1

What condition?

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Staph Scalded Skin Syndrome (SSSS)

1

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Cellulitis

2

What condition?

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Bullous impetigo. May only see this (remnants of former blisters)

3

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Impetigo

3

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SSSS

Note pustules in the neck. Could be yeast, bacteria, viral

But here it is staph

3

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Impetigo

5

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Hot tub folliculitis

Pseudomonas aeruginosa

7

what is this? how different from SSSS?

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Toxic epidermal necrolysis

Skin sloughs off full-thickness (epidermal-dermal junction is destroyed).

SSSS is more superficial (doesn't even scar). stratum granulosum only.

8

Cellulitis: clinical signs?

Blood cultures?

Signs of infection: rubor, calor, dolor, tumor

Blood cultures often neg

9

Appearance of erysipelas v cellulitis?

Erysipelas: well-demarcated edge. Peau d'orange texture.

Cellulitis: more spread out, less well demarcated.

10

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SSSS

Toxic erythema (redness due to throughout the body)

10

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Folliculitis

infected hair follicles

11

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Carbuncle

12

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Furuncle

14

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Furuncles

15

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Cellulitis

Streptococcal perianal disease: recurrent bright perianal erythema in children. likely due to strep.

15

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Erysipelas

The swelling and sharp demarcation are characteristic of erysipelas. The area involved is usually very tender. The patient usually feels quite ill.   Allergic contact dermatitis and rosacea are in the differential diagnosis. 

16

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necrotizing fasciitis.

Involvement of perineum and genitalia --> Fournier's gangrene

(this pic due to circumcision)

18

What is this? What should I be looking for?

How is it different from HSV?

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Impetigo

Look carefully here for vesicles. Lesions start out as vesicles, then become pustules.

HSV: grouped lesions, history of getting this every 6 months at same location.

HSV lesions are more sharply-defined, "punched out", rounded.

(HSV pic from internet, hopefully it's what it said it is!)

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19

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SSSS

20

What condition? what are these called?

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Impetigo

Hemorrhagic bulla

21

SSSS: what is the cause?

Staph aureus produces an endotoxin (exfolatin A, exfolatin B) that circulates, splits the skin at the superficial granular layer

23

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Carbuncle

24

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Carbuncle (ruptured)

25

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Hot tub folliculitis.

Acne is NOT usually this uniform looking. Hot tub folliculitis often has pustules that look very monomorphic (the same) and uniform, with a spread of erythema away from the pustule of a few mm.  This is also what staphylococcal folliculitis looks like.