A 22-year-old with moderate acne is prescribed topical tretinoin. What is the most important counseling point? 

A 28-year-old woman with HIV is on antiretroviral therapy and has an undetectable viral load. Her male partner is HIV-negative. Which strategy provides the most effective reduction in HIV transmission risk? 

A 40-year-old man asks for “antibiotics” for his cold symptoms, which include nasal congestion, sore throat, and rhinorrhea for 3 days. Exam: afebrile, lungs clear. What is the best management? 

A patient on timolol eye drops for glaucoma should be monitored for which systemic adverse effect? 

A 68-year-old man with diabetes and aortic aneurysm is prescribed levofloxacin for pneumonia. Which serious FDA warning is most relevant? 

Which ophthalmic condition is treated with antihistamine/mast cell stabilizers? 

A 17-year-old sexually active adolescent presents with dysuria and vaginal discharge. NAAT is positive for Chlamydia trachomatis. She is otherwise healthy and not pregnant. What is the CDC-recommended treatment? 

A 72-year-old woman with COPD reports 3 exacerbations requiring prednisone in the last year despite being on tiotropium (LAMA). Her eosinophil count is 450/µL. What is the best next step? 

A 72-year-old woman with osteoporosis is prescribed alendronate. Which instruction is essential? 

A 56-year-old woman with allergic rhinitis uses oxymetazoline (Afrin) nasal spray daily for 2 weeks. She reports worsening congestion when she skips doses. What condition is she experiencing?