Sleep Disturbances and Their Link to Lewy Body Dementia
One of the warning signs of Lewy body dementia (LBD) is a sleep disorder known as REM-sleep behavior disorder (RBD). Medical professionals have identified RBD as a common symptom in individuals with LBD, wherein they exhibit unusual movements or even speak during sleep. This, coupled with the overall confusion experienced by those with LBD, often leads to difficulty in distinguishing between dreams and reality. Researchers have observed that a majority of individuals diagnosed with RBD eventually develop degenerative illnesses in the years that follow. Interestingly, the same brain defect responsible for causing RBD is also believed to play a significant role in the development of Lewy body dementia.
Hallucinations in Lewy Body Dementia
Individuals diagnosed with Lewy body dementia often encounter hallucinations, particularly during episodes of heightened confusion. These hallucinations primarily manifest as visual perceptions of objects or individuals that are not present in reality. Besides visual hallucinations, individuals may also experience difficulties with spatial awareness, depth perception, and a sense of detachment from reality in terms of taste, touch, and sound. Before confirming a diagnosis of Lewy body dementia, doctors will first eliminate other potential causes, such as medication side effects or substance abuse.