DECISION TREE FOR NEUROLOGICAL AND MUSCULOSKELETAL DISORDERS2 Decision Tree for Neurological and Musculoskeletal Disorders Neurological and musculoskeletal disorders are unpredictable and may follow a progressive course, thus, periodic evaluation and assessment by an advanced practice nurse (APN) is necessary to avoid recurrence of the disorder. This study will focus on a patient who was diagnosed with major neurocognitive disorder, which resulted from Alzheimer’s disease (AD). According to Khoury, Rajamanickam, and Grossberg (2018), AD is considered as the main cause of neurocognitive disorders across the globe, which lead to impairment of one’s judgment and interference with daily functions. Summary of the Case Scenario The case scenario involved a 76-year-old Iranian male patient, who, according to his son, was demonstrating strange behavior, which began two years ago. The severity seemed to increased when he lost interest in religious activities, became forgetful, and criticized everything. The patient also found it hard to find appropriate words in a conversation. The Mini-Mental State Exam (MMSE) score was 18 out of 30. The mental status examination indicated that the patient