Brain diseases are complex and often devastating conditions that can have a major impact on a person's life. There are a number of different terms that are sometimes used to refer to these conditions, including neurological disorders, mental illnesses, and cognitive impairments. Other synonyms for brain disease might include conditions like dementia, Alzheimer's disease, or Parkinson's disease, each of which involves specific symptoms and challenges. Regardless of what term is used to describe these conditions, it is important for patients and caregivers alike to seek out treatment and support in order to manage the impact of these conditions on their lives.