#may2020usmle2ck
A 29 year-old man presents to his physician complaining of fatigue and lethargy for the past 3 days after he came back from a hiking trip in Northern California. During the trip, he noticed a rash on his left arm. The rash was smaller but now it’s expanding in size. On examination, the rash looks round with central clearing.
What is the most likely organism involved in this condition?
A- Meningococci
B- Staphylococcus aureus
C- Borrelia burgdorferi
D- Rickettsia prowazekii
E- Treponema pallidum
A 29 year-old man presents to his physician complaining of fatigue and lethargy for the past 3 days after he came back from a hiking trip in Northern California. During the trip, he noticed a rash on his left arm. The rash was smaller but now it’s expanding in size. On examination, the rash looks round with central clearing.
What is the most likely organism involved in this condition?
A- Meningococci
B- Staphylococcus aureus
C- Borrelia burgdorferi
D- Rickettsia prowazekii
E- Treponema pallidum
