A 19-Year-Old College Sophomore Comes to the Clinic for Evaluation

A 19-year-old college sophomore comes to the clinic for evaluation of joint pains. The student has been back from spring break for 2 weeks; during her holiday, she went camping. She notes that she had a red spot, shaped like a target, but then it started spreading, and then the joint pains started. She used insect repellant but was in an area known to have ticks. She has never been sick and takes no medications routinely; she has never been sexually active. What is the most likely cause of her joint pain?

A) Trauma
B) Gonococcal arthritis
C) Psoriatic arthritis
D) Lyme disease