Skin and Wound Infections

Question 1

What is it necessary to have a functioning normal flora?

Answer 1

Prevent Colonization, and can become pathobiont if relocated

Question 2

Folliculitis

Answer 2

Commonly in sites of friction. Main cause is o S. Aureus and Pseudomonas Aeruginosa

Question 3

Furuncle

Answer 3

Superficial skin infection mainly linked with the follicles of the eyelash

Question 4

Carbuncle

Answer 4

Contains a cluster of furuncle infections. most commonly found at the base of the neck in depressed host immunity

Question 5

Describe the three main features of Staph Aureus.

Answer 5

Produces Protein A which prevents binding to phagocytes and stops the complement cascade. Produces 5 enzymes to help with its growth and survival including coagulase and beta-lactamase. And lastly it is normal flora of the face and hands.

Question 6

Define Strep Impetigo

Answer 6

Similar to cold sores with yellow crusty scabs and enlarged lymph nodes. Extremely contagious.

Question 7

This is a symptom that is mainly caused by Strep Pyogenes.

Answer 7

Acute Glomerulonephritis

Question 8

Can lead to bacteremia which is life threatening, Mainly in the face but can affect lower extremities

Answer 8

Erysipelas

Question 9

Deeper than erysipelas, Severe diffuse inflammation and erythema

Answer 9

Cellulitis

Question 10

What is special about Erysipelas and cellulitis?

Answer 10

They both occur together in most cases and are caused by Group A Strep. 10% of cases due to staph Aureus.