Q. A 25-year-old homosexual man comes to the physician's office for fatigue and body rash for the past two weeks. He first noticed the rash on the chest which slowly spread to his arms and legs. He doesn’t have itching or photosensitivity. He is a nonsmoker, and nonalcoholic and denies recreational drug use. His medical history shows that he uses fluticasone nasal spray for allergic rhinitis. His temperature is 100°F (37.7°C), pulse is 90/min, blood pressure is 110/80 mmHg, and respirations are 14/min. Physical examination shows diffuse, symmetric reddish maculopapular lesions on the entire chest and extremities including the palms and soles. Oral examination shows multiple, raised, fleshy, grey painless lesions on the tongue. The lymph nodes of the axillary, inguinal, femoral, and epitrochlear regions are enlarged. They are non-tender with a rubbery consistency. Rest of the examination is normal. The initial lab investigations are shown below. Which of the following is the best next step for this patient’s management?