![]() ![]() REM sleep disorder is more common in early DLB than in Alzheimer's.Hallucinations and misidentification of familiar people are significantly more frequent in early-stage DLB than in Alzheimer's.However, Alzheimer's can cause problems with walking, balance and getting around as it progresses to moderate and severe stages. Movement symptoms are more likely to be an important cause of disability early in DLB than in Alzheimer's.However, advanced DLB may cause memory problems in addition to its more typical effects on judgment, planning and visual perception. Memory loss tends to be a more prominent symptom in early Alzheimer's than in early DLB.Key differences between Alzheimer's and dementia with Lewy bodies Since Lewy bodies usually coexist with Alzheimer's brain changes, it may sometimes be hard to distinguish DLB from Alzheimer's disease, especially in the early stages. Parkinson's disease symptoms may include changes in movement like a tremor. The diagnosis is Parkinson's disease dementia when a person experiences dementia at least one year (and usually several years) after the onset of symptoms of Parkinson’s disease.In some cases of DLB, symptoms of Parkinson’s disease, like changes in movement, may never occur. The diagnosis is DLB when a person experiences dementia either before, at the same time as, or within one year of the onset of symptoms of Parkinson’s disease.They recommend continuing to diagnose DLB and Parkinson's disease dementia as separate disorders. Most experts believe that dementia with Lewy bodies and Parkinson's disease dementia are two different expressions of the same underlying problems with brain processing of the protein alpha-synuclein. The only way to conclusively diagnose DLB is through a postmortem autopsy. Today, DLB is a "clinical" diagnosis, which means it represents a doctor's best professional judgment about the reason for a person's symptoms. Donate NowĪs with other types of dementia, there is no single test that can conclusively diagnose dementia with Lewy bodies. Learn more about these and other possible symptoms from the Lewy Body Dementia Association.ĭonate today so we can continue advancing critical research and providing free 24/7 support to those who depend on it. Memory loss that may be significant, but less prominent than in Alzheimer's.Malfunctions of the "automatic" (autonomic) nervous system, which controls automatic functions of the body, such as sweating, blood pressure, heart rate, digestion and sexual response.Trouble interpreting visual information.Spontaneous parkinsonism with slowness of movement, rest tremor, or rigidity. ![]()
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