Apr 12, 2024
Conclusion
Among the neurodegenerative diseases, Lewy body dementia (LBD) presents a significant difficulty because of its wide range of symptoms, many of which are also present in other conditions, such as Alzheimer's and Parkinson's diseases. Taking its name from the brain's alpha-synuclein aggregation, LBD has distinct difficulties in terms of diagnosis and treatment. We examine the clinical characteristics, underlying neuropathology, diagnosis techniques, and possible treatment options of Lewy body dementia in this extensive guide.
Dementia with Lewy bodies and Parkinson's disease with dementia are two extremes of the spectrum on which LBD presents. Visual hallucinations are one of the main characteristics of LBD, and they can be upsetting for both patients and caretakers. Patients may also have REM behavioral disorder (RBD), which is characterized by dream theater when they are asleep. Parkinsonism, cognitive fluctuations, delusions, orthostatic hypotension, and spells of bewilderment are other typical symptoms.
Notably, symptoms such as loss of smell and constipation may occur prior to the onset of Parkinson's disease, highlighting the complexity of LBD's clinical presentation.
Also Read: Chronic Fatigue Syndrome (CFS) and Myalgic Encephalomyelitis (ME): Diagnosis, and Treatment
Features |
Mild cognitive impairment LB pathology |
Mild cognitive impairment Alzheimer’s disease pathology |
Domain Affected |
|
|
Fluctuations in cognition |
Frequent |
Rare |
Sleep issues |
REM behavioral disorder Frequent |
Frequently awakening Insomnia |
Visual hallucinations |
Frequent |
Rare |
Polysomnogram |
RBD: EMG with respect to the peripheral extremities will show the physical movement |
No specific activity |
CSF |
Alpha synuclein levels are very less |
|
MRI |
Atrophy of the amygdala |
Parahypocampus will be affected |
18 FDG PET |
Decreased metabolism in the occipital cortex |
Decreased activity of the parietal and temporal lobe |
Amyloid PET |
- |
+ |
MiBG myocardial scintigraphy |
Post ganglionic sympathetic denervation |
Not seen |
PET DOPA |
Decreased activity of the basal ganglia (Dopamine) |
Normal |
CSF |
Decrease in the alpha synuclein |
Decrease in Abeta amyloid |
Also Read: Image Based Questions On Neurology
The cause of neurodegenerative dementia is dysbiosis Alpha syn aggregation and oxidative stress propagate from the lower to the cerebral regions. The heart may also be involved. When the inclusions enter the brain, they are intracytoplasmic. Alpha synuclein is the protein that makes up Lewy bodies.
Among the stains is PAS reagent,ubiquitin. The enteric nervous system is the cause of Parkinson's disease. Scent bulbs travels through the vagus nerve to reach the heart from the anterior nervous system.
The sympathetic pathway's post-ganglionic fibers will become denervated. Examination - Myocardial Scintigraphy using MiBG.
There is involvement in the lower brainstem region. Hypotension in orthostatic posture Putamen and Substansia nigra are implicated.
The amygdala was later affected by the disease (Limbic system). The cognitive impairment is caused by cerebral cortex involvement.
Also Read: Prion Disease- Pathogenesis, Diagnosis and Management
MRI brain distinction- Atrophy of Multiple Systems, Amygdala atrophy.
The polysomnographic method- Less tone in the muscles and little movement during the REM period in a normal person while electrodes for LBD will detect electrical activity resulting from the tearing of limbs and legs. Alpha synuclein levels dropped in the CSF research.
Test: Conversion caused by trembling in real time. Myocardial scintigraphy with MiBG shows that the spread of prion causes post-ganglionic sympathetic denervation. PET scan- One observes hypometabolism., more costly.
Also Read: Neuromyelitis Optica: Revealing the Mystery
Treatment |
Description |
Cholinergic deficit |
|
Clozapine |
|
Pimavanserin |
|
RBD |
|
Escitalopram |
|
Orthostatic hypertension |
|
Physical therapy |
|
Lewy body dementia presents serious difficulties for individuals with the condition, their carers, and medical professionals. Through an enhanced comprehension of its neuropathology, clinical characteristics, and available treatments, we will be able to provide better assistance to those impacted by this intricate illness. The medical community's ongoing research and cooperation provide promise for better treatment strategies and diagnostic methods, which will eventually improve the quality of life for those with Lewy body dementia.
Hope you found this blog helpful for your NEET SS Medicine Neurology Preparation. For more informative and interesting posts like these, keep reading PrepLadder’s blogs.
Get access to all the essential resources required to ace your medical exam Preparation. Stay updated with the latest news and developments in the medical exam, improve your Medical Exam preparation, and turn your dreams into a reality!
The most popular search terms used by aspirants
Avail 24-Hr Free Trial