Kurtzke’s Expanded Disability Status Scale (EDSS)

The Expanded Disability Status Scale (EDSS), an accepted method of quantifying disability in Multiple Sclerosis (MS) consists of an eight-function system scale monitoring motor, sensory, cerebellar, brain stem, visual, bowel and bladder, pyramidal and other functions.

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Spetzler–Martin Grading Scale for Arteriovenous Malformations of the Brain

Arteriovenous malformations of the brain are congenital anomalies of the blood vessels that are derived from maldevelopment of the capillary network, allowing direct connections between cerebral arteries and veins. The most common presenting symptoms are cerebral hemorrhage and seizures. Focal neurologic deficits and headaches may develop independent of cerebral bleeding. As a result of the widespread use of brain imaging, arteriovenous malformations are increasingly being discovered incidentally.

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Clinical Syndromes of Acute Spinal Cord Compression

The cardinal features of acute spinal cord compression are relatively symmetric paralysis of the limbs, urinary retention or incontinence, and a circumferential boundary below which there is loss of sensation, referred to as the “sensory level”.

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Diagnostic Criteria for Inclusion Body Myositis (IBM)

Inclusion body myositis is the most common myopathy in patients over the age of 40 years encountered in neurological practice. Although it is usually sporadic, there is increasing awareness of the influence of genetic factors on disease susceptibility and clinical phenotype. The diagnosis is based on recognition of the distinctive pattern of muscle involvement and temporal profile of the disease, and the combination of inflammatory and myodegenerative changes and protein deposits in the muscle biopsy.

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Diagnostic Criteria for Transient Global Amnesia (TGA)

 

Transient global amnesia (TGA) is a benign, temporary loss of anterograde memory with sparing of immediate recall and remote memories.

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Hachinski Ischemic Scale (HIS)

The Hachinski ischemic score (HIS) is known to be a simple clinical tool, currently used for differentiating major types of dementia, such as primary degenerative, vascular or multi-infarct, and mixed type.

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Diagnostic Criteria for Multiple-System Atrophy (MSA)

Multiple system atrophy (MSA) is a sporadic and fatal alpha-synuclein-linked oligodendrogliopathy manifesting with progressive autonomic failure, poorly levodopa-responsive parkinsonism, and cerebellar ataxia, in any combination.

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Criteria for Neurosurgical or Neuroradiologic Intervention for Mold Infections of the Central Nervous System (CNS)

The clinical characteristics of mold infections of the CNS warrant assessment for possible biopsy and neurosurgical intervention. A definitive diagnosis almost invariably requires a biopsy, with prompt inspection of the specimen by means of wet-mount preparation with calcofluor white stain, culture, and histologic analysis (with Gomori methenamine silver stain and periodic acid–Schiff stain). In situ hybridization and immunohistochemical analysis may be helpful if cultures of biopsy specimens are negative.

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Diagnostic Criteria for Dementia with Lewy Bodies (DLB)

Synucleinopathies, with and without dementia, encompass a wide range of diseases including Parkinson’s disease, multiple system atrophy, rapid eye movement (REM) sleep behavior disorder, and dementia with Lewy bodies (DLB). DLB is a neurodegenerative disorder resulting in slowly progressive and unrelenting dementia until death.

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Revised Diagnostic Criteria for Rett Syndrome (RTT)

Rett syndrome (RTT) is a severe neurodevelopmental disease that affects approximately 1 in 10,000 live female births and is often caused by mutations in Methyl-CpG-binding protein 2 (MECP2).

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