Sаrаh, а physical therapist, is evaluating Mr. Jоhnsоn, a 68-year-оld male who presents with dizziness. The following is part of her subjective history-taking: Sarah: "So, you're feeling dizzy?"Mr. Johnson: "Yes, it's been happening for a while now."Sarah: "Okay. Have you fallen before?"Mr. Johnson: "Not really, just once or twice."Sarah: "Alright. Do you feel the room spinning, or is it more like lightheadedness?"Mr. Johnson: "I think it’s spinning, but I’m not sure. It just makes me feel off-balance."Sarah: "Got it. Do you have any medical conditions?"Mr. Johnson: "I have high blood pressure."Sarah: "Okay, let's move on to the physical exam." Which critical aspect of the subjective exam did Sarah fail to explore?