Ch 21 Bacterial Diseases

Question 1

Infection of a hair follicle =

Answer 1

Folliculitis

Question 2

Often called a pimple or boil =

Answer 2

Folliculitis

Question 3

This is called a sty whenever it occurs at the eyelid base =

Answer 3

Folliculitis

Question 4

Pus-filled abscess due to Folliculitis =

Answer 4

Furuncles

Question 5

These occur whenever multiple furuncles grow together =

Answer 5

Carbuncles

Question 6

What are Carbuncles?

Answer 6

A deep, pus-filled abscess

Question 7

List some bacterial diseases of the skin:

Answer 7

Folliculitis
Necrotizing fasciitis
Impetigo
Pseudomonas Infection
Bacterial Conjuctivitis
Trachoma (Eye Infection)

Question 8

What type of bacteria is responsible for Folliculitis?

Answer 8

Staphylococcal

Question 9

What type of bacteria is responsible for Necrotizing fasciitis?

Answer 9

Streptococcal

Question 10

What type of bacteria is responsible for Impetigo?

Answer 10

Staph / Strep

Question 11

What are some virulence factors involved in Folliculitis?

Answer 11

Staphylolysins

Hyaluronidase

Question 12

Folliculitis can be caused by-

Answer 12

Direct contact with a bacteria or via fomites

Question 13

Furuncles and Carbuncles always need treatment with-

Answer 13

Antibiotics

Question 14

Flesh eating bacteria =

Answer 14

Necrotizing fasciitis

Question 15

Where does Necrotizing fasciitis occur?

Answer 15

The Fascia (between muscle tissue and the hypodermis)

Question 16

Signs & Symptoms of Necrotizing fasciitis:

Answer 16

Redness, intense pain, and swelling at infection site.

Fever, nausea, malaise, and possible mental confusion.

Question 17

Necrotizing fasciitis enters the body through-

Answer 17

Breaks in the skin

Question 18

Necrotizing fasciitis rarely spreads from person-to-person.
True or false?

Answer 18

True

Question 19

Cellulitis, Erysipelas, and Erythema nodosum are all-

Answer 19

Streptococcal Skin Infections

Question 20

What’s Cellulitis?

Answer 20

A painful red rash

Question 21

Large, intensely inflamed patches of skin with clear borders =

Answer 21

Erysipelas

Question 22

Inflammation of fat cells of the hypodermis; these lumps/nodules typically form on the legs =

Answer 22

Erythema nodosum

Question 23

Impetigo is treated with-

Answer 23

Topical or Oral Antibiotics

Question 24

How do you prevent impetigo?

Answer 24

Keep wounds clean/covered

Question 25

Signs/symptoms of Impetigo?

Answer 25

Pustules, vesicles and sometimes bullae.

Red, itchy sores…a characteristic honey colored scab forms over
the sore.

These sores can develop any where on the body.

Question 26

An area of skin that’s 5 mm, and is covered by a raised, fluid-filled bubble =

Answer 26

Bullae

Question 27

Bullae is the fancy word for-

Answer 27

Blister

Question 28

What is it called whenever different pathogens work together to cause an infection?

Answer 28

Coinfections or Polymicrobial Infections

Question 29

What are Pseudomonas Infections?

Answer 29

It’s a type of blood infection that causes fever, chills, and shock

Question 30

A blue-green color can occur during a massive wound infection that’s caused by the bacterial pigment known as-

Answer 30

Pyocyanin

Question 31

What are the virulence factors for Pseudomonas?

Answer 31

Fimbriae, Adhesions
Capsule
Toxins
Enzymes

Question 32

What bacteria causes ~10% of HAI’s?

Answer 32

Pseudomonas

Question 33

Is it easy to diagnose Pseudomonas infection?

Answer 33

No

Question 34

How can you diagnose Pseudomonas infection?

Answer 34

Can tell if given a bacterial sample collection.
Pyocyanin can be an indicator of a massive infection.
This infection can cause a distinct smell of grape soda or corn chips.

Question 35

How are Pseudomonas infections typically treated?

Is this treatment usually difficult?

Answer 35

A combination of antimicrobials.
(Topical antibiotics + IV antibiotics if signs of sepsis).

Yes, because pseudomonas can have a multi-drug resistance.