A 42-year-old gender non-binary individual with HIV presents to the clinic to reestablish care after a several-year absence. They feel well and have no complaints, though syphilis screening shows a positive enzyme immunoassay antibody (EIA) and a rapid plasma reagin (RPR) titer of 1:32. Records show the most recent syphilis testing was obtained 3 years ago and the EIA was negative. They report condomless sex with several male partners over the past 2 years, but none were known to have syphilis. They have no symptoms and the physical examination is normal, including a normal neurologic examination. They have no medication allergies.