skin and soft tissue infections

Question 1

describe sturcture of skin

Answer 1

epidermis+dermis,fat , muscle.

Question 2

describe important infections of skin&soft tissue

Answer 2

G+:-staphyococcus:boils, impetigo
-streptococcus: impetigo, cellulitis, necrotising fasciitis
-clostridium: gas gangrene
G-: -pseudomonas: folliculitis
-vibrio:necrotising fascitis
- escherichia:wound infection
- bacteroides: wound infection, bites
mycobacteria: - mycobacterium:buruli ulcer, leprosy

Question 3

describe important infections of softtissue

Answer 3

cellulitis, carbuncles

Question 4

leprosy(hansen’s disease)

Answer 4

mycobacterium lerpae

Question 5

leprosy(hansen’s disease)

Answer 5

mycobacterium lerpae

Question 6

gas gangrene

Answer 6

clostridium perfringens

Question 7

buruli ulcer/bairnsdale ulcer

Answer 7

mycobacterium ulcerans.

Question 8

necrotisiting fasciitis virulent serotypes

Answer 8

M1.3.28.

hypervirulent

Question 9

G- virulent factor

Answer 9

• biofilm formation
• extracellular enzymes(proteases lipases)
• toxins
• microbial synergy

Question 10

fungi skin infection

Answer 10

1.dermatophytes.2.yeasts

Question 11

tinea barbae

Answer 11

beard

Question 12

tinea corporis(ringworm)

Answer 12

body(trunk)

Question 13

tinea cruris

Answer 13

groin

Question 14

tinea pedis

Answer 14

foot

Question 15

tinea unguium

Answer 15

nail

Question 16

tinea capitis

Answer 16

head

Question 17

tinea manuum

Answer 17

hand

Question 18

tinea manuum

Answer 18

hand

Question 19

drmatophtes contain three genera

Answer 19

1. epidermophyton.
2. microsporum
3. trichophyton

Question 20

skin yeast

Answer 20

candida spp

malassezia spp

Question 21

candida virulence

Answer 21

1. extracellular enzymes(eg.secretory aspartyl-proteases)
2. formation of germ tubes
3. adhesion

Question 22

malassezia virulence

Answer 22

1. lipases

2. little esle known

Question 23

virual skin infection common

Answer 23

HSV1&2,Varicella zoster.Molluscum.Papilloma virus.

Coxsackie A. enterovirus. echovirus

Question 24

cold sore

Answer 24

HSV1

Question 25

Hand foot and mouth disease

Answer 25

Coxsackie A, enterovirus, echovirus

Question 26

warts

Answer 26

papilloma virus

Question 27

varicelle zoster

Answer 27

chickenpox , shingles

Question 28

molluscum

Answer 28

molluscum dontagiosum

Question 29

HSV2

Answer 29

gential warts

Question 30

varicella zoster remain in

Answer 30

neuroal ganglia