Lewy body disease, also known as dementia with Lewy bodies (DLB), is a neurodegenerative disorder that affects the brain. Synonyms for this condition include Lewy body dementia, cortical Lewy body disease, and diffuse Lewy body disease. These terms are used interchangeably to describe the specific symptoms and characteristics of this complex disorder. Lewy body disease is characterized by the presence of abnormal protein deposits called Lewy bodies, which disrupt the normal functioning of brain cells. Symptoms can range from cognitive impairment, hallucinations, and motor problems similar to Parkinson's disease. Understanding these synonyms helps in identifying and diagnosing this challenging neurodegenerative condition.