Nursing management of organic brain disorders Prevalence and Incidence of Organic Brain Disorders 🔍 Definition 📊 Prevalence and Incidence of Major Organic Brain Disorders: 1. Dementia (including Alzheimer’s Disease) 🔸 Alzheimer’s disease accounts for 60–70% of dementia cases. 2. Delirium 🔸 Often underdiagnosed but highly prevalent in hospital and postoperative settings. 3. Traumatic Brain Injury (TBI) 4. Wernicke-Korsakoff Syndrome (Alcohol-related brain disorder) 🎯 Summary Table Disorder Global Prevalence Incidence Dementia