Parkinson's disease dementia is a cognitive decline that can occur in individuals diagnosed with Parkinson's disease. This condition affects memory, attention, and problem-solving abilities, making daily tasks more challenging. It typically develops years after the onset of motor symptoms associated with Parkinson's disease. Symptoms of Parkinson's disease dementia may include confusion, difficulty with planning, and changes in mood or behavior. While not everyone with Parkinson's disease will experience dementia, those who do may benefit from supportive therapies and medications to help manage their symptoms and improve quality of life.