Cognitive dysfunction refers to a decline in cognitive abilities, such as memory, attention, and problem-solving skills. It can affect daily functioning and may result from various factors, including aging, medical conditions, or mental health disorders. Common examples include Alzheimer's disease, dementia, and traumatic brain injury. Symptoms of cognitive dysfunction can vary widely but often include forgetfulness, difficulty concentrating, and challenges in planning or organizing tasks. Early detection and intervention are crucial, as they can help manage symptoms and improve quality of life. Treatment options may include medication, therapy, and lifestyle changes.