Unit 5

Question 0

Define comedo

Answer 0

Skin swells over the poor leading out of the hair follicle

Question 1

Name of the bacterial agent that causes acne

Answer 1

Propionibacterium acnes

Question 2

Define cysts

Answer 2

Painful pustules that involve deeper layers of the skin; called cystic acne

Question 3

Define whitehead

Answer 3

Pore is closed, pus build-up, when erupts called a pustule

Question 4

Define blackhead

Answer 4

Pore open, but surface is blocked and sebum turns dark

Question 5

What is the sturdiest of all nonspore forming bacteria

Answer 5

Staphylococcus aureus

Question 6

What test would be used to distinguish Staphylococcus aureus from other staph

Answer 6

Coagulase

Question 7

What test would be used to distinguish staph from strep

Answer 7

Catalase

Question 8

Another name for impetigo

Answer 8

Pyoderma

Question 9

What to bacterial agents cause impetigo

Answer 9

Staph aureus and streptococcus pyogenes

Question 10

What does Staph aureus produce to cause impetigo

Answer 10

Exfoliative toxins

Question 11

Describe cellulitis

Answer 11

Condition caused by fast spreading infection in the dermis and subcutaneous tissues below (deeper)

Question 12

What 2 bacterial agents are responsible for cellulitis

Answer 12

Staph aureus and Staph pyogenes

Question 13

What is lymphangitis

Answer 13

Inflammation of lymphatic vessels, red lines leading away from the area; sign that it (cellulitis) is spreading

Question 14

Describe folliculitis

Answer 14

Mild, superficial inflammation of hair follicles or glands. Pimple, sty

Question 15

Bacterial agent that causes folliculitis

Answer 15

Staph aureus

Question 16

What is an abscess

Answer 16

Inflamed fibrous lesion enclosing a core of pus. “Bacteria bombs “

Question 17

What is a furuncle or boil

Answer 17

Inflammation of single hair follicle or oil gland

Question 18

What is a carbuncle

Answer 18

Larger, deeper lesion, a collection of furuncles

Question 19

Explain the process of necrotizing fasciitis

Answer 19

“Flesh eating disease” enzymes digest the connective tissue, toxins poison the epidermal and dermal tissue. Flesh will slough off

Question 20

Name of the two bacterial agents that cause necrotizing fasciitis. Which one is the primary cause?

Answer 20

Staph aureus and Strep pyogenes primary is strep

Question 21

Describe staphylococcal scalded skin syndrome (SSSS)

Answer 21

Is dermolytic; babies form bullous lesions, red wrinkled tissue; exfoliative toxin leads to widespread desquamation

Question 22

Name of the bacterial agent that causes staphylococcal scalded skin syndrome (SSSS)

Answer 22

Staph aureus

Question 23

Name of the bacterial agent that causes gas gangrene

Answer 23

Clostridium perfringens

Question 24

Describe Clostridium perfringens

Answer 24

Spore former, obligate anaerobe, releases exotoxins

Question 25

What is a bulla

Answer 25

Large gas blisters

Question 26

Name of the bacterial agent that causes leprosy

Answer 26

Mycobacterium leprae

Question 27

Describe the features of leprosy

Answer 27

Acid-fast positive; affects skin and peripheral nerves; facial features become thick (lionlike), nose may collapse, toes and fingers are absorbed

Question 28

Describe cutaneous anthrax

Answer 28

Most common and least dangerous version; easily spread; eschar

Question 29

Name of the bacterial agent that causes cutaneous anthrax

Answer 29

Bacillus anthracis (spore former)

Question 30

Name all of the skin infections caused by bacteria

Answer 30

Acne, impetigo, cellulitis, folliculitis, necrotizing fasciitis, SSSS, gas gangrene, leprosy, anthrax

Question 31

Name of the three infections that cause vesicular or pustular rashes

Answer 31

Chicken pox, smallpox, herpes

Question 32

Describe macular

Answer 32

Flat lesions with no fluid

Question 33

Describe papular

Answer 33

Raised lesions with no fluid

Question 34

Describe vesicular

Answer 34

Fluid filled lesion

Question 35

Describe pustular

Answer 35

Pus in fluid filled lesions

Question 36

Purulent

Answer 36

Contains pus; pox

Question 37

Name of the virus that causes chickenpox

Answer 37

Varicella virus

Question 38

Describe what chickenpox causes

Answer 38

Abundant rash all over the body; vesicular or pustular rash

Question 39

If a person has chickenpox they then can have ____ later in life caused by the ____ virus

Answer 39

Shingles; herpes zoster

Question 40

Name of the virus that causes smallpox

Answer 40

Variola virus

Question 41

Describe the smallpox symptoms

Answer 41

Rash in mouth first, break open in the mouth and throat, very contagious. Rash over whole body in 24 hours; bumps filled with liquid that are indented in the middle

Question 42

What is the clinical difference between smallpox and chickenpox

Answer 42

In smallpox the bumps filled with liquid are indented in the middle

Question 43

Herpes is caused by what two viruses? Explain the difference between the two viruses

Answer 43

Herpes simplex I (above the waist) or herpes simplex II (below the waist)