Cluster Headache

Cluster Headache –  aka – migranous neuralgia Account for <1% of all headaches This is a unilateral pain that typically wakes the patient during the night, so called, because attacks occur in ‘clusters’ –...

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Comparison of Intracranial Haemorrhage

Comparison of Intracranial Haemorrhage Feature Subarachnoid Subdural Extradural Location The inner most layer around the brain tissue Between the dura mater and arachnoid mater The outermost layer, between the skull and dura mater Mechanism...

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CVA – Cerebrovascular Accident (Stroke)

Introduction Stroke is a sudden onset of brain dysfunction, caused by an alteration in cerebrovascular blood supply. It is characterised by: Rapid, acute onset – within a few minutes Focal neurological defect – almost...

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Dementia

Dementia is a progressive global decline cognitive function, without impairment of consciousness. It is typically defined as a syndrome secondary to one or more of multiple causes, rather than a diagnosis in its own right....

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Descending (Motor) Pathways

Tract Location of Upper Motor Neurons Destination Site of Crossover Action CORTICOSPINAL   Corticobulbar   Primary Motor Cortex (pyramidal cells) Cranial Nerves III – XII Brainstem Conscious Motor control of skeletal muscles   Anterior...

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Encephalitis

Encephalitis is inflammation of the brain parenchyma that is usually caused by a viral infection. Aetiology Encephalitis is usually viral in origin. Causative organisms include: Echoviruses Coxsackie Mumps Herpes simplex – This often causes...

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Epilepsy

Summary Definitions Seizure – spontaneous uncontrolled abnormal brain activity Epilepsy – a tendency to have seizures. Epilepsy is a symptom, and not a true condition. Epilepsy can be diagnosed after a minimum of 2...

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