Lecture 7 - Skin/Soft Tissue Infections

Question 1

_____ is characterized by honey colored crusting. It is usually from infection by ____ or _____

Answer 1

Impetigo;

staph aureus, strep pyogenes

Question 2

Impetigo is an infection of the _____. bulluous impetigo is usually caused by ____ which release _____

Answer 2

superficial epidermis;
staph aureus;
toxins

Question 3

Erysipelas is an infection of the ____ _____ and superficial lympphatics. Usually from ___ ____

Answer 3

superficial/upper dermis;

strep pyogenes

Question 4

skin infections associated with vesicles tend to be caused by ____

Answer 4

viruses

Question 5

what causes hand, foot, and mouth disease”

Answer 5

coxsackie A

Question 6

______ presents with crops of lesions in various stages from vesicles to crusts. what is seen histologically?

Answer 6

VZV (chickenpox);

multinucleated giant cells w/ intranuclear inclusions

Question 7

scalded skin syndrome, nec fasc, gas gangrene, and vibrio vulnificus are all associated with what skin lesion?

what skin layer is this?

Answer 7

bullae;

epidermis

Question 8

with ____ ____, pain is described as out of proportion to exam findings. causes ____ from methane and CO2 production.

Answer 8

necrotizing fasciitis;
crepitus;

deeper tissue injury

Question 9

scalded skin syndrome is caused by _____;

keratin attachments in the ____ _____ are destroyed

Answer 9

staph aureus;

stratum granulosum

Question 10

______ ____ causes gas gangrene. this is due to production of _______ that causes myonecrosis and hemolysis

Answer 10

C. perfringes;
Alpha toxin (a lecithinase)

Question 11

Cellulitis is a painful infection of the ______. usually from ____ or ____

Answer 11

deeper dermis/subcu;

staph aureus, strep pyogenes

Question 12

name 3 follicular infections

Answer 12

folliculitis, furuncles, carbuncles