A 38-year-old man presents 10 hours after a deer tick bite in an endemic area. The engorged tick was removed intact; estimated attachment time 48 hour...

Question

A 38-year-old man presents 10 hours after a deer tick bite in an endemic area. The engorged tick was removed intact; estimated attachment time 48 hours. He is asymptomatic. Best next step?

Accepted Answer

Give doxycycline 200 mg orally once within 72 hours

Answer

No prophylaxis; provide routine wound care only

Answer

Start amoxicillin 500 mg orally three times daily for 14 days

Answer

Order Lyme serology now and treat if positive

Answer

Administer doxycycline 100 mg twice daily for 7 days

us-abfm MCQ (SBA): Lyme Disease Prophylaxis

A 38-year-old man presents 10 hours after a deer tick bite in an endemic area. The engorged tick was removed intact; estimated attachment time 48 hours. He is asymptomatic. Best next step?