MICRO Infections of the Skin & MSK

Question 1

Main causative agent of acute osteomyelitis

Answer 1

S. aureus.

Question 2

Main causative agent of chronic osteomyelitis

Answer 2

Mycobacterium tuberculosis.

Question 3

Main causative agent of cellulitis

Answer 3

S. aureus/S. pyogenes.

Question 4

Main causative agent of of gas gangrene

Answer 4

C. perfringens

Question 5

Main causative agent of superficial mycoses/tinia versicolour

Answer 5

M. furfur.

Question 6

Main causative agent of cold sores

Answer 6

HSV T1

Question 7

Main causative agent of genital ulcers

Answer 7

HSV T2

Question 8

Main causative agent of measles

Answer 8

Paramyxovirus

Question 9

Main causative agent of rubella

Answer 9

ss RNA togavirus

Question 10

Main causative agent of hand, foot & mouth

Answer 10

Coxsackievirus

Question 11

Main causative agent of scalded skin syndrome

Answer 11

Toxin-producing S. aureus

Question 12

Main causative agent of scalded skin syndrome

Answer 12

Toxin-producing S. aureus

Question 13

Main causative agent of toxic shock syndrome

Answer 13

S. aureus OR S. pyogenes

Question 14

Main causative agent of impetigo.

Answer 14

S. pyogenes.

Question 15

Main causative agent of erysipelas

Answer 15

S. pyogenes

Question 16

Main causative agent of necrotising fascitis

Answer 16

S. pyogenes

Question 17

Main causative agent of scarlet fever

Answer 17

S. pyogenes

Question 18

Condition associated with sweating -> hypo or hyperpigmented macules and causative agent.

Answer 18

Superficial mycoses (caused by Malazzesia furfur).

Question 19

Treatment for cold sores/genital warts

Answer 19

Acyclovir

Question 20

Microscopic appearance of S. aureus

Answer 20

Gram +ve, grape-like clusters.

Question 21

Microscopic appearance of S. pyogenes

Answer 21

Gram +ve, long chains.

Question 22

Condition associated with punctate erythematous rash & strawberry tongue.

Answer 22

Scarlet fever.