Derm: Skin infections

Question 1

Resistance mechanisms of the skin

Answer 1

Physical barrier, low pH sebaceous fluid, fatty acids, antimicrobial peptides, normal flora

Question 2

What is impetigo?

Answer 2

Superficial, crusting epidermal skin infection. Honey-colored crust

Question 3

What are the two ways impetigo can present

Answer 3

Bullous and non-bullous

Question 4

Who gets impetigo mostly?

Answer 4

Kids

Question 5

What is the most affected site of impetigo?

Answer 5

Face

Question 6

Which bug(s) cause(s) impetigo?

Answer 6

Staph aureus, Strep pyogenes

Question 7

Which skin condition is pictured?

Answer 7

Impetigo

Question 8

What is eysipelas?

Answer 8

Streptococcal infection of superficial dermis. Sharply demarcated, raised borders.

Question 9

Which disease is pictured?

Answer 9

Erysipelas. Not sharply demarcated, raised borders

Question 10

What is cellulitis?

Answer 10

Infection of deeper dermis (deeper than erysipelas) and subcutaneous tissue.

Poorly demarcated borders

Question 11

Which bug causes cellulitis (the vast majority, anyway)?

Answer 11

Strep