Brain disorders are medical conditions that affect the structure and function of the brain. These disorders can impact a person's thinking, behavior, and emotions. Common examples include Alzheimer's disease, Parkinson's disease, and epilepsy. They can result from genetic factors, infections, injuries, or other health issues. Symptoms of brain disorders vary widely and may include memory loss, difficulty concentrating, mood changes, and seizures. Diagnosis often involves medical history, neurological exams, and imaging tests like MRI or CT scans. Treatment options may include medications, therapy, and lifestyle changes to help manage symptoms and improve quality of life.