Summary 1: Skin rashes

Question 1

Red, maculopapular rash on face and trunk

Answer 1

First choice: Measles virus

Other choices: Rubella virus

Question 2

Pedunculated red/purple nodules

Answer 2

First choice: Bartonella henselae

Question 3

Macules/papules/vesicles on hands, feet, and mouth

Answer 3

First choice: Coxsackie A virus

Question 4

Itching

Answer 4

First choice: Varicella zoster virus

Other choices: Dermatophytes, scabies

Question 5

Unilateral rash

Answer 5

First choice: Varicella zoster virus

Question 6

Vesicles on lips

Answer 6

First choice: Herpes simplex virus-1

Question 7

Vesicles on penis

Answer 7

First choice: Herpes simplex virus-2

Question 8

White spots inside cheek

Answer 8

First choice: Measles virus

Question 9

Yellow, crusted rash on face

Answer 9

First choice: Staphylococcus aureus

Other choices: Group A streptococci

Question 10

“Splinter” hemorrhages

Answer 10

First choice: Viridans streptococci

Question 11

Pustules

Answer 11

First choice: Staphylococcus aureus

Question 12

Warts

Answer 12

First choice: Human papillomavirus

Other choices: Molluscum contagiosum

Question 13

Genital ulcer without pain

Answer 13

First choice: Treponema pallidum

Question 14

Strawberry tongue

Answer 14

First choice: Group A streptococci

Question 15

Sandpaper macules on trunk with red throat

Answer 15

First choice: Group A streptococci

Question 16

Annular rash

Answer 16

First choice: Dermatophytes

Other choices: Borrelia burgdorferi

Question 17

Petechiae

Answer 17

First choice: Neisseria meningitidis

Other choices: Typhus

Question 18

Diffuse, red, spreading

Answer 18

First choice: Group A streptococci

Question 19

Desquamation

Answer 19

First choice: Staphylococcus aureus

Question 20

Hypo/hyper pigmented

Answer 20

First choice: Dermatophytes