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Showing posts with the label Neurology

80% of Alzheimer’s cases can be prevented

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  Normal brain vs Alzheimer brain For many, alzheimer’s and dementia are viewed as inevitable diseases of old age. However in a way, experts suggest that shifting focus to brain health early in life could significantly alter this perspective. While clinical manifestations often appear in the 60s, 70s, and 80s, the contributing habits and lifestyles are often established in our 20s and 30s. Dementia is an umbrella term, similar to cancer, encompassing various conditions, with Alzheimer's constituting about 60% to 70% of all dementias. Other forms include frontal temporal lobe dementia, Lewy body dementia, Parkinson's dementia, Huntington's dementia, metabolic dementias, and alcohol-related dementias, each potentially having different pathways. Surprisingly, even Alzheimer's itself is seen as a spectrum with different subtypes and pathways leading to the same outcome.From what I've seen, a significant takeaway is the potential for preventing a large proportion of deme...

Signs of Cerebellar dysfunction & How to examine them (with mnemonic)

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The cerebellum is a major part of the brain located in the posterior cranial fossa, behind the pons and medulla oblongata. It is the largest part of the hindbrain and sits astride the main sensory and motor systems in the brainstem. Image of cerebellum (purple colored) - From Wikipedia  The signs of Cerebellar dysfunction can be memorized with the mnemonic "DANISH" . D - Dysdiadochokinesia, Dysmetria  A - Ataxia N  - Nystagmus  I  - Intention tremor  S  - Slurred speech  H  - Hypotonia  Let's discuss more about the signs in detail and ways to examine it on a patient. Signs of Cerebellar Dysfunction and how to examine them Dysdiadochokinesia  Dysdiadochokinesia is the inability to perform rapidly alternating opposite movements in a regular and coordinated manner .  This difficulty arises when the motor control system fails to accurately predict the position of different body parts during rapid movements. As a result, the subseq...