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Focal seizures (also called partial seizures) are seizures which affect only a small part of the brain, and are split into two main categories; simple partial seizures and complex partial seizures
A simple partial seizure will often be a precursor to a larger seizure such as a complex partial seizure, or a tonic-clonic seizure. When this is the case, the simple partial seizure is usually called an aura.
Focal seizures are common in temporal lobe epilepsy.
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| Nervous system pathology, primarily CNS (G00-G47, 320-349) |
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Inflammatory diseases
of the CNS | Meningitis (Arachnoiditis) - Encephalitis - Myelitis - Encephalomyelitis (Acute disseminated) - Tropical spastic paraparesis |
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Systemic atrophies
primarily affecting the CNS | Huntington's disease - Spinocerebellar ataxia (Friedreich's ataxia, Ataxia telangiectasia, Hereditary spastic paraplegia)
Spinal muscular atrophy: Werdnig-Hoffman disease - Kugelberg-Welander disease - Fazio Londe syndrome -
MND (Amyotrophic lateral sclerosis (ALS), Progressive muscular atrophy (PMA), Progressive bulbar, Pseudobulbar, PLS) |
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Extrapyramidal and
movement disorders | Parkinson's disease - Neuroleptic malignant syndrome - Postencephalitic parkinsonism - Pantothenate kinase-associated neurodegeneration - Progressive supranuclear palsy - Striatonigral degeneration - Dystonia (Spasmodic torticollis, Meige's syndrome, Blepharospasm) - Essential tremor - Myoclonus - Chorea (Choreoathetosis) - Restless legs syndrome - Stiff person syndrome |
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Other degenerative /
demyelinating diseases | Alzheimer's disease - Pick's disease - Alpers' disease - Dementia with Lewy bodies - Leigh's disease - Multiple sclerosis - Devic's disease - Central pontine myelinolysis - Transverse myelitis |
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| Seizure/epilepsy | Focal (Simple partial, Complex partial) - Generalised (Tonic-clonic, Absence, Atonic, Benign familial neonatal) - Lennox-Gastaut - West - Epilepsia partialis continua - Status epilepticus (Complex partial status epilepticus) |
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| Headache | Migraine (Familial hemiplegic) - Cluster - Vascular - Tension |
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| Vascular | Transient ischemic attack (Amaurosis fugax, Transient global amnesia) - Cerebrovascular disease (MCA, ACA, PCA, Foville's syndrome, Millard-Gubler syndrome, Lateral medullary syndrome, Weber's syndrome, Lacunar stroke) |
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| Sleep disorders | Insomnia - Hypersomnia - Sleep apnea (Ondine's curse) - Narcolepsy - Cataplexy - Kleine-Levin syndrome - Circadian rhythm sleep disorder - Delayed sleep phase syndrome - Advanced sleep phase syndrome |
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| Other | Hydrocephalus (Normal pressure) - Idiopathic intracranial hypertension - Encephalopathy - Brain herniation - Cerebral edema - Reye's syndrome - Syringomyelia - Syringobulbia - Spinal cord compression |
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