JAK2 and acquired polycythemia vera: We present the case of a 67-year-old female with a history of janus kinase 2 (JAK2) V617F- positive polycythemia vera, managed for seven years with phlebotomy, aspirin, and hydroxyurea, presenting to the clinic with complaints of muscle aches, fatigue, loss of appetite, lightheadedness, and night sweats for two months.