Chapter 19-Microbial Diseases of the Skin and Wounds

Question 1

Skin microbiota

Answer 1

Normally harmless, Compete with potential pathogens for nutrients and space, May produce disease (if penetrate epidermis or if immune system is suppressed)

Question 2

Folliculitis

Answer 2

Infection of the hair follicle, Most commonly caused by Staphylococcus

Question 3

Staphylococcal Scalded Skin Syndrome

Answer 3

Skin becomes red and wrinkled and forms blisters, Outer epidermis peels off, One of two different exfoliative toxins cause SSSS

Question 4

Necrotizing Fasciitis

Answer 4

Most cases are caused by Streptococcus pyogenes, Exotoxin A and streptolysin S damage cells and tissues, S. pyogenes enters through breaks in the skin, Usually spread person to person

Question 5

Acne

Answer 5

Pathogen- commonly caused by Propionibacterium acnes, Epidemiology- typically begins in adolescence, Diagnosis/treatment/prevention- treated with antimicrobial drugs and drugs that cause exfoliation of dead skin cells

Question 6

Functions of the skin

Answer 6

Prevents excessive water loss, Regulates temperature, Involved in sensory phenomena, Assists in vitamin D formation, Barrier against microbial invaders