Ch 21 Bacterial Diseases Flashcards
Infection of a hair follicle =
Folliculitis
Often called a pimple or boil =
Folliculitis
This is called a sty whenever it occurs at the eyelid base =
Folliculitis
Pus-filled abscess due to Folliculitis =
Furuncles
These occur whenever multiple furuncles grow together =
Carbuncles
What are Carbuncles?
A deep, pus-filled abscess
List some bacterial diseases of the skin:
Folliculitis
Necrotizing fasciitis
Impetigo
Pseudomonas Infection
Bacterial Conjuctivitis
Trachoma (Eye Infection)
What type of bacteria is responsible for Folliculitis?
Staphylococcal
What type of bacteria is responsible for Necrotizing fasciitis?
Streptococcal
What type of bacteria is responsible for Impetigo?
Staph / Strep
What are some virulence factors involved in Folliculitis?
Staphylolysins
Hyaluronidase
Folliculitis can be caused by-
Direct contact with a bacteria or via fomites
Furuncles and Carbuncles always need treatment with-
Antibiotics
Flesh eating bacteria =
Necrotizing fasciitis
Where does Necrotizing fasciitis occur?
The Fascia (between muscle tissue and the hypodermis)
Signs & Symptoms of Necrotizing fasciitis:
Redness, intense pain, and swelling at infection site.
Fever, nausea, malaise, and possible mental confusion.
Necrotizing fasciitis enters the body through-
Breaks in the skin
Necrotizing fasciitis rarely spreads from person-to-person.
True or false?
True
Cellulitis, Erysipelas, and Erythema nodosum are all-
Streptococcal Skin Infections
What’s Cellulitis?
A painful red rash
Large, intensely inflamed patches of skin with clear borders =
Erysipelas
Inflammation of fat cells of the hypodermis; these lumps/nodules typically form on the legs =
Erythema nodosum
Impetigo is treated with-
Topical or Oral Antibiotics
How do you prevent impetigo?
Keep wounds clean/covered
Signs/symptoms of Impetigo?
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.
An area of skin that’s 5 mm, and is covered by a raised, fluid-filled bubble =
Bullae
Bullae is the fancy word for-
Blister
What is it called whenever different pathogens work together to cause an infection?
Coinfections or Polymicrobial Infections
What are Pseudomonas Infections?
It’s a type of blood infection that causes fever, chills, and shock
A blue-green color can occur during a massive wound infection that’s caused by the bacterial pigment known as-
Pyocyanin
What are the virulence factors for Pseudomonas?
Fimbriae, Adhesions
Capsule
Toxins
Enzymes
What bacteria causes ~10% of HAI’s?
Pseudomonas
Is it easy to diagnose Pseudomonas infection?
No
How can you diagnose Pseudomonas infection?
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.
How are Pseudomonas infections typically treated?
Is this treatment usually difficult?
A combination of antimicrobials.
(Topical antibiotics + IV antibiotics if signs of sepsis).
Yes, because pseudomonas can have a multi-drug resistance.
