Lewy bodies are abnormal clumps of proteins that are found in the brains of those with Parkinson’s and other related diseases. These clumps of proteins can cause a variety of neurological issues, including cognitive decline, movement issues, and changes in mood and behavior.
The areas of the brain affected by Lewy bodies vary, depending on the type of Lewy body disease. In Parkinson’s disease, Lewy bodies are primarily found in the substantia nigra, a deep area of the brain that is responsible for movement. In dementia with Lewy bodies, Lewy bodies are found throughout the brain, including in the hippocampus and frontal and temporal lobes.
The hippocampus is an area of the brain that is involved in memory formation and recall, so when Lewy bodies are present in this area, it can lead to memory problems and confusion. In the frontal and temporal lobes, Lewy bodies can cause difficulties with language, executive functioning, and decision-making.
Lewy bodies can also be found in the locus coeruleus, which is responsible for many of the body’s automatic functions, such as blood pressure, heart rate, and breathing. There is evidence that suggests Lewy bodies in this area of the brain can contribute to a variety of symptoms, including sleep disturbances, changes in alertness, and changes in behavior.
Overall, Lewy bodies can affect many different areas of the brain, depending on the type of Lewy body disease. The areas of the brain most affected are typically the substantia nigra, hippocampus, frontal and temporal lobes, and locus coeruleus.