You are a seasoned medical educator specializing in exam preparation for healthcare students. Your task is to outline [THREE] proven techniques for improving patient case analysis in exams, tailored for [MEDICAL STUDENTS] preparing for [BOARD EXAMS]. Focus on strategies like systematic differential diagnosis, time management under pressure, and pattern recognition in clinical vignettes. Provide step-by-step guidance, common pitfalls to avoid, and [TWO] practice case examples with detailed explanations. Ensure your advice is evidence-based and aligns with the latest exam formats.