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Flashcards in Lecture: bacterial skin diseases Deck (70)
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1

Bacteria on skin classified into

  • residents
    • multiply
  • transients
    • do not multiply
  • pathogens
    • s. pseudintermedius
    • s. schleiferi

2

Most mild skin infections located in

the inguinal area

3

99.9 % of skin infections in dogs are

bacterial, usually staph

4

species that normally have s. aureus

horses

cats

humans

5

porcine skin flora

staph hyicus

-can be transmitted to people

6

Physical defense mechanisms

  • hairs, turnover of stratum corneum

7

Biggest guns we have

  • fluoroquinalones: baytril

8

Pyoderma

  • Pus in skin (bacterial infection within the skin)

9

Most instances of pyoderma are primary, or secondary?

secondary

10

classifications of pyoderma

  • Primary vs Secondary
  • Site
  • Pathogen
  • Depth
    • surface
    • superficial
    • deep

11

Surface pyoderma

  • pyotraumatic dermatitis (hot spot)
  • Skin fold pyoderma (intertrigo)

12

underlying causes of surface pyoderma

  1. flea allergy
  2. ectoparasites
  3. allergic skin diseases
  4. anal sac diseases
  5. otitis externa
  6. contact
  7. ocular

13

common area for hotspots

  • face
  • rump

14

Folliculities (little red dots) on edge of hot spot = 

must treat with systemic antibiotics

15

Hot spots topical treatment

  • clip area
  • clean area
  • topical astringents (NO CREAMS OR OINTMENTS)
  • break itch cycle (oral pred)
  • +/- systemic AB
  • identify and correct underlying cause

16

Skin fold pyo may be a combo of pathogens

  • yeast
  • bacteria

*do cytology to see if it is yeast in addition to bacteria

17

Steroid admin in sharpes will

shrink skin folds (decreases mucin)

18

low pH is bad for

bacteria

19

skin fold pyo therapy

  • medical 
    • cleaning
    • wipes (50/50 white vinegar and water)
  • surgery

20

superficial pyoderma

  • deeper than surface pyoderma
  • pustules present in stratum corneum or inside hair follicles

21

most common manifestation of bacterial skin infection see in practice

folliculitis

22

impetigo

  • subcorneal pustules in glabrous areas
  • not contagious like in human dz
  • seen in puppies

23

Impetigo dx

  • signalment and clinical signs

24

Impetigo TX

  • Topical therapy
  • Ensure clean environment
  • Severe or persistent cases may need antibiotics

25

Benzo peroxide

  • human products 5-10 %
  • dog products 2.5 %

*human skin greasier than dog skin. Human products will irritate dog skin

26

FOLLICULITIS (TEST QUESTION)

  • Bacteria: staph
  • Deodex
  • Dermatophyte

27

Primary lesions of furunculosis

  • papules
  • pustules
  • Erythematous macules

28

Secondary lesions of furunculosis

  • circular crusts
  • collarettes
  • focal scale
  • alopecia
  • hyperpigmented macules

29

rancid odor and skin disease can be

yeast or staph

30

Distribution of pyoderma is primarily

(ie distribution of staph infections)

  • Truncal