Differential (Click to cross reference) abdominal cramps abdominal distention abdominal mass abdominal tenderness abducens nerve paralysis abducens nerve paralysis, bilateral abortion, spontaneous abscess, cerebellum abscess, intracerebral abscess, intracerebral, multiple abscess, intracerebral, recurrent abscess, intracerebral, treatment of abscess, intracerebral, tuberculous abscess, intracranial abscess, intracranial-fungal abscess, liver abscess, lung abscess, muscle abscess, perivalvular abscess, pyogenic abscess, retropharyngeal abscess, sphenoid sinus abscess, spinal cord abstinence syndrome acetaminophen acoustic nerve acoustic nerve, vestibular division of acquired immunodeficiency syndrome acquired immunodeficiency syndrome defining illness acquired immunodeficiency syndrome dementia complex acquired immunodeficiency syndrome, heralded by neurologic invol acquired immunodeficiency syndrome, infants and children acral sensory symptoms acrocyanosis ACTH stimulation test 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vs.bilateral amebiasis amenorrhea ammonia amnesia amniotic fluid, infection AMPA receptor antibodies amphotericin B amyloid angiopathy, cerebral amyloid angiopathy, cerebral, inflammatory type amyloidosis ANA ANA-negative systemic lupus erythematosus anaplastic large cell lymphoma anasarca anatomy of anemia anemia, hemolytic anencephaly anergy anesthesia, general anesthesia, spinal aneurysm aneurysm, asymptomatic aneurysm, fungal intracranial aneurysm, intracranial aneurysm, multiple intracranial aneurysm, vertebral basilar system angiitis angiitis, granulomatous of CNS angiitis, isolated of CNS angina pectoris angiography, cerebral, beaded vessels angiography, cerebral angiography, cerebral, false negative angiography, neurologic complications with angiography, posterior fossa angiostrongylus cantonensis angiotensin-converting enzyme anhidrosis animal bite animal exposure anisocoria ankle edema anorexia anosmia anterior cerebral artery territory infarction anterior horn cell disease 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of aortic valve, regurgitation aortic valve, stenosis aortitis Apgar score aphasia aphasia, global apnea appendicitis apraxia apraxia of eyelid closure apraxia, constructional aqueduct of Sylvius, stenosis arachnoiditis arbovirus area postrema areflexia arm weakness arrhythmia, cardiac arterial dissection arterial dissection, aorta arterial dissection, aorta, cerebral symptoms with arterial dissection, carotid arterial dissection, recurrent arterial dissection, vertebral arteriopathy arteriovenous malformation arteriovenous malformation, cerebral arteritides arteritis, temporal arteritis, temporal, extremity involvement with arthralgia arthritis arthropathy ascending paralysis Asia Asians asparginase aspartate aminotransferase aspergillosis aspiration aspirin asplenia asterixis asthma asymptomatic ataxia ataxia, acute onset ataxia, cerebellar ataxia, progressive ataxia, truncal ataxia, truncal, associated with ocular oscillations ataxic gait atherosclerosis, generalized athetosis atonic bladder atrial fibrillation atrial fibrillation, treatment atrial flutter atrial myxoma atrioventricular block atropine atropine psychosis atypical atypical lymphocytes audiogram autoantibodies autoimmune basal ganglia encephalitis autoimmune disease autoimmune encephalopathy autoimmune GFAP astrocytopathy autoimmune meningitis autonomic dysfunction autonomic dysfunction, acute autonomic nervous system autonomic neuropathy autonomic neuropathy, idiopathic axonal degeneration azathioprine B cell lymphoma babesiosis Babinski sign baclofen baclofen withdrawal bacteremia bacterial endocarditis, neurologic manifestations of bacterial infection bacterial infection, CNS Balint's syndrome barbiturate anesthesia bartonella henselae bartonella quintana basal cistern basal ganglia basal ganglia, calcification of basal ganglia, lesion of basal ganglia, lesion, bilateral baseball basilar artery bat bite Beau's lines bedridden behavior behavior, combative behavioral disorder behavioral disorder, acute Behcet's syndrome belladonna belligerent Bence Jones protein benzodiazepine beta-D-glucon bilirubin encephalopathy biological warfare biotin biotin deficiency biotin deficiency, juvenile form biotin-responsive basal ganglia disease bitemporal visual field defect blacks bladder dysfunction blastomycosis bleomycin blind spot, enlarged blindness blindness, monocular blindness, transient blood cultures blood dyscrasias, neurologic findings with blood transfusion blue toe syndrome body temperature bone biopsy bone marrow biopsy bone marrow infarction bone marrow necrosis bone marrow transplantation bone pain bone scanning bone survey Borrelia burgdorferi infection Borrelia miyamotoi infection brachial neuritis brachial plexus neuropathy brachial plexus neuropathy, children bradykinesia brain atrophy brain biopsy brain biopsy, complications of brain biopsy, false negative brain biopsy, indication brain biopsy, negative brain biopsy, stereotaxic brain damage brain natriuretic 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surgery cardiac surgery, neurologic complications with cardiac transplantation cardiomyopathy caribbean caries carotid angiogram carotid artery carotid artery compression carotid artery disease carotid artery disease, noninvasive evaluation of carotid artery intima-media thickness carotid artery narrowing carotid artery stenosis carotid artery stenosis, intracranial carotid-siphon stenosis carpal tunnel syndrome carphology case studies cat exposure CAT scan CAT scan, abdomen CAT scan, abnormal CAT scan, abscess, cerebral CAT scan, angiography CAT scan, base of skull CAT scan, brain scan compared to CAT scan, cardiac, ultrafast CAT scan, chest CAT scan, contrast enhanced CAT scan, contrast enhanced, subepend. CAT scan, disappearing lesion on CAT scan, emission CAT scan, emission, abnormal CAT scan, false negative CAT scan, gray matter enhancement CAT scan, mass effect on CAT scan, metrizamide CAT scan, myelogram with CAT scan, negative CAT scan, ring sign Cat scan, sinus CAT scan, spine CAT scan, venography cataracts cataracts, congenital catatonia catatonia, lethal cat-scratch disease cauda equina cauda equina, enhancement cauda equina, lesion of cavernous sinus cavernous sinus, expansion cavernous sinus, lesion of cavernous sinus, metastasis to cavernous sinus, syndrome cavernous sinus, thrombosis cavernous sinus, thrombosis, septic CD19-directed chimeric antigen receptor T-cell therapy CD4 counts Central America central artery of Percheron central nervous system, infection of central nervous system, infection, cancer patient central pontine myelinolysis central retinal artery occlusion central venous catheter cephalosporins cerebellar ataxia, children cerebellar atrophy, primary cerebellar degeneration cerebellar edema cerebellar infarction cerebellar infarction, bilateral cerebellar lesion cerebellar vermis cerebellitis cerebellum cerebellum, disease of cerebral autosomal dominate arteriopathy with subcortical infarction and leukoencephalopathy cerebral blood flow cerebral cortex cerebral cortical atrophy cerebral cortical encephaliis cerebral edema cerebral embolism cerebral embolism, cardiac origin cerebral embolism, carotid origin cerebral infarction cerebral infarction, hemorrhagic cerebral infarction, septic cerebral infarction, small, deep cerebral infarction, subcortical cerebral ischemia cerebral palsy cerebral palsy, risk factors cerebral tumor-like American trypanosomiasis cerebral vasculature cerebral venous infarction cerebral venous thrombosis cerebral vessels, microscopic exam cerebritis cerebrospinal fluid cerebrospinal fluid, abnormal cerebrospinal fluid, appearance of cerebrospinal fluid, beta-D-glucan cerebrospinal fluid, cell count 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disease with cerebrovascular disease, rapidly progressive cerebrovascular disease, risk factors in cerebrovascular disease, surgical treatment of cervical spine cesarean section Chagas'disease Charcot-Marie-Tooth Chediak-Higashi syndrome chemical meningitis chemical weapons chemosis chemotherapy, CNS treatment and complications with chest pain chest x-ray, abnormal Cheyne Stokes respirations Chikungunya encephalomyeloradiculitis chilbran skin lesions children chills chlamydia infection chlorpromazine cholecystitis cholesteatoma chondrocalcinosis chorea chorea, Sydenham's choreoathetosis chorioamnionitis chorioretinitis choroid plexus choroid plexus, abnormality of choroid plexus, enhancement choroid plexus, prominence of choroid plexus, tumor of chromosomal abnormality chromosome 19 chromosome 2 chromosome 3 chronic fatigue syndrome Churg-Strauss syndrome cingulate gyrus cirrhosis claudication, extremity claustrum climate change Clinical Pathologic Conference(C.P.C.) clivus clomipramine clopidogrel clostridium tetani clozapine clubbing of fingers cluster, geographic coagulopathy coarctation of aorta cocaine coccidioidomycosis Cogan's syndrome cogentin cognition cogwheel rigidty coinfection collagen vascular disease collapsin response mediator protein 5 IgG color vision, impaired coma coma, causes of coma, medically induced coma, sudden onset coma, unknown etiology comorbidities complement deficiency compliance complicated migraine complications compounded drugs compression fracture concentration, impaired conduction block confusion confusional state, acute congenital heart disease congenital heart disease, CNS complications with congenital malformation congestive heart failure conjunctival injection conjunctivitis constipation contractures, joint controversies in neurology conversion reaction cooling therapy cornea, abnormal cornea, opacity of corneal dystrophy corneal edema corneal reflex, abnormal coronary artery bypass coronary artery disease coronavirus corpus callosum corpus callosum, infarction of corpus callosum, lesion of cortical blindness cortical blindness, transient cortical hemorrhage cortical infarction cortical ribbon sign cortical vein thrombosis corticotropin level corticotropin-releasing factor cortisol, elevated cortisol, low coryza cost cotton-wool spots cough COVID-19 Coxiella burnetti cranial nerve enhancement cranial nerve enlargement cranial nerve palsies cranial nerve palsies, unilateral cranial neuropathy cranial neuropathy, multiple craniopharyngioma Craniosynostosis crawl regression C-reactive protein C-reactive protein, elevated creatine phosphokinase isoenzyme elevation creatine phosphokinase MB isoenzyme elevation creatine phosphokinase(CPK)elevated critical care unit crossed adductor reflex Crowned dens syndrome cry, abnormal cry, high-pitched crying, pathologic cryoglobulinemia cryopyrin-associated periodic syndrome cryptococcal antigen cryptococcal meningitis cryptococcoma, cerebral cryptococcosis Cushing's syndrome cyanosis cyclophosphamide cyst cyst, cortical parenchyma cyst, dermoid of CNS cyst, parenchymal cyst, porencephalic cysticercosis, cerebral cytochrome c oxidase cytoid bodies cytokine release syndrome cytokine storm cytokines cytomegalic inclusion disease cytomegalovirus infection cytosine arabinoside dantrolene sodium D-dimer deafness deafness, bilateral deafness, bilateral progressive vs.unilateral acute deafness, unilateral decision analysis deep gray nuclei DEET deficiency of ADA2 dehydration delay in diagnosis delirium delusion dementia dementia, cerebrovascular disease causing dementia, presenile dementia, rapidly progressive dementia, reversible dementia, subcortical dementia, treatment of demyelinating disease Dengue fever dental abscess dental extraction dental implants dental infection dental procedure, neurologic complications with dentate nuclei, lesion of depression depression, psychotic dermatomyositis dermatosis developmental evaluation developmental milestones, loss of developmental retardation diabetes insipidus diabetes mellitus diagnostic criteria dialysis diaphragmatic paralysis diarrhea diarrhea, bloody differential diagnosis digital subtraction angiography digital subtraction angiography, venous dilantin dilantin, hypersensitivity to dilantin, toxicity diplegia, atonic diplegia, brachial diplopia diplopia, vertical disability, neurological disc space infection discitis disorientation disseminated intravascular coagulation(DIC) distal muscle atrophy diurnal variation dizziness dog bite doll's head maneuver Dominican Republic donut sign dopamine antagonist down-beat nystagmus down-beat nystagmus, primary position of gaze downward gaze, paralysis of doxycycline DPPX, antibodies, encephalitis Dravet syndrome drooling drowsiness drug abuse drug abuse, neurologic complications of drug abuse, toxic screen In drug addiction drug induced neurologic disorders drug interactions drug overdose drug withdrawal duplex ultrasound dura, thickened dural sinus thrombosis dysarthria dyskinesia dyskinesia, buccal lingual facial dyskinesia, facial dysmetria dysphagia dysphonia dyspnea dyspraxia dystonia dystonia, cervical dystonia, children dystonia, painful ear, pain in ear, red ear, swollen eating disorder ecchymoses echinococcus granulosus echocardiogram echocardiogram, LVH echocardiogram, transesophageal echocardiogram, transesophageal, false negative echocardiogram, transthoracic echocardiogram, transthoracic, false negative echoencephalogram ectatic basilar artery edema, facial edema, pedal edema, periorbital Ehlers-Danlos syndrome ehrlichiosis Eisenmenger's syndrome ejection fraction ejection fraction, abnormal electrical fields, alternating electrocardiogram, abnormal electroencephalogram electroencephalogram, abnormalities of electroencephalogram, diffuse slowing electroencephalogram, focal delta activity electroencephalogram, periodic complexes electroencephalogram, triphasic delta waves electromyogram electron microscopy ELISA Elsberg syndrome embolism embolism, air embolism, atheromatous embolism, cholesterol embolism, fat embolism, paradoxical embolism, platelet embolism, retinal embolism, septic embolism, systemic emergencies, medical emergencies, neurologic emergency room emotional lability empyema, epidural empyema, epidural-spinal empyema, subdural empyema, subdural-spinal encephalitis encephalitis, acanthamoeba encephalitis, acute encephalitis, amebic encephalitis, autoimmune encephalitis, bacterial encephalitis, bornavirus encephalitis, brainstem encephalitis, clinical picture and treatment of encephalitis, deer tick encephalitis, diagnosis of encephalitis, eastern equine encephalitis, episodic encephalitis, etiology encephalitis, focal encephalitis, human immunodeficiency virus type 1 encephalitis, Japanese encephalitis, La Crosse encephalitis, paraneoplastic encephalitis, Powassan encephalitis, recurrent encephalitis, sequelae in encephalitis, St.Louis 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enterovirus infection of CNS enzyme, defect enzyme, muscle disease enzyme, serum eosinophilia eosinophilia-myalgia syndrome eosinophilic fasciitis eosinophilic granulomatosis with polyangiitis ependymitis epidemic epidemiology of neurology epidural blood patch epidural steroid epilepsy epileptic encephalopathy episcleritis episodic disorders episodic neurologic deficits epistaxis epistaxis, recurrent epsilon-aminocaproic acid(E.A.C.A.) Epstein-Barr virus Epstein-Barr virus, negative erysipelothrix rhusiopathiae erythema migrans erythema multiforme erythema nodosum erythrocyte erythroderma escherichia coli esophageal lesion associated with C.N.S.disease Europe exercise exercise intolerance exome sequencing exophthalmus Exserohilum rostratum extrapyramidal eye movement, disorders of eye movement, painful eye, lymphoma of eye, pain in Fabry's disease face, numbness of facial hair, excessive facial infection facial movement disorder facial nerve palsy facial nerve palsy, bilateral facial pain facial swelling facial tenderness facial weakness facial weakness, bilateral faciobrachial dystonic seizure failure to thrive falling false negative false positive false positive VDRL familial familial mediterranean fever farmer fasciculation fat fatigue febrile infection-related epilepsy syndrome feeding disorder femoral artery catheterization ferritinemia fetal death fever fever of unknown origin fever, recurrent fibrillations fibrin split products finger nose finger test Fisher's syndrome Fisher's syndrome, atypical fistula, arterio-venous, pulmonary fistula, atrioesophageal fistula, enterospinal fistula, perilymphatic flaccid paralysis FLAMES flavivirus flea bite fleas flicker fusion test floaters fluconazole fluctuate flu-like illness fluorescein angiography fluorouracil fluphenazine flush syndrome flushing food-borne infection foot drop foot drop, bilateral foot drop, differential diagnoses of foreign body reaction foscarnet fourth ventricle, compression fourth ventricle, floor fracture, long bone Froin's syndrome frontal bossing fundus, abnormality of fungal infection fungal infection, CNS fungal infection, CNS, treatment of fusobacterium necrophorum F-wave response gadolinium gag reflex, depressed gait disorder gait, spastic galactorrhea gallium scan gamma amino butyric acid receptor antibody gammaglobulin therapy, intravenous ganciclovir gardener gastroenteritis gastrointestinal bleeding gastrointestinal disease, neurologic complications gaze deviation gaze palsy gaze palsy, supranuclear gaze palsy, vertical gender gene gene mutation genetic diagnosis, prenatal genetic neurologic disorders genetic screening genetic testing geniculate body, lateral genital ulcerations genu of corpus callosum geographic location GFAP-IgG Ghana giant cell arteritis gingival hyperplasia gingivitis glioblastoma multiforme(astrocytoma Gr.III) gliomatosis cerebri globus pallidus, lesion of globus pallidus, lesion of, bilateral glossitis glutamic acid decarboxylase, antibody GM antigen test gnathostomiasis gram negative rod gram positive rod granuloma, eosinophilic granuloma, pulmonary granulomatosis with polyangiitis granulomatosis, allergic granulomatous disease granulomatous hypophysitis grasp reflex gray hair gray matter Griscelli syndrome growth retardation Guillain Barre syndrome Guillain Barre syndrome, differential diagnosis of Guillain Barre syndrome, pharyngeal-cervical-brachial variant Guillain Barre syndrome, variant forms of guinea pig inoculation guinea pigs gum disease gyral infarct gyrus, abnormal H1N1 influenza H3N2 influenza hair analysis hallucination hallucination, auditory hallucination, olfactory hallucination, visual haloperidol hamster hand pain hand-foot-mouth disease Hand-Schuller-Christian disease Hawaii head circumference head circumference and brain development head injury head injury, management of head injury, pediatric head lag headache headache, awakened by headache, bifrontal headache, chronic headache, chronic daily headache, drug induced headache, elderly headache, focal headache, frontal headache, intermittent headache, location headache, new onset headache, occipital headache, persistent headache, positional headache, progressive headache, recurrent headache, retro-orbital headache, severe headache, sudden onset of headache, throbbing headache, thunderclap headache, unilateral headache, worst of life hearing loss hearing loss, bilateral hearing loss, sudden, bilateral heart block heart murmur heart valve surgery heart valve, prosthetic heat exposure heat intolerance heatstroke helminthic infection of CNS hematoma, intracerebral hematuria, gross hematuria, microscopic hemianopia hemianopia, homonymous hemihyperesthesia hemiparesis hemiplegia hemiplegia, progressive hemoglobin abnormality, neurologic complications of hemoglobinuria hemolytic-uremic syndrome hemophagocytic lymphohistiocytosis hemophagocytic lymphohistiocytosis, cerebromeningeal hemophagocytosis hemophilus influenza hemoptysis hemorrhage, intracranial, newborn hemorrhagic diathesis hemorrhagic shock encephalopathy syndrome hemorrhoids heparin hepatic encephalopathy hepatic failure hepatic failure, acute hepatitis hepatitis B virus hepatitis C virus hepatomegaly hepatosplenomegaly heralding manifestation hereditary hemorrhagic telangiectasia(HHT) herniated disc, differential diagnosis of herniation syndromes, intracranial herpes encephalitis herpes labialis herpes simplex encephalitis herpes simplex encephalitis, atypical herpes simplex encephalitis, diagnosis of herpes simplex encephalitis, differential diagnosis of herpes simplex encephalitis, prognosis of herpes simplex encephalitis, recurrent herpes simplex encephalitis, treatment of herpes simplex myelitis herpes simplex virus herpes simplex virus infection, immunosuppressed patient herpes simplex virus, human nervous system and herpes simplex virus, localization of herpes simplex virus, malignancy with herpes simplex virus, pathogenesis of herpes simplex virus, pathology of herpes simplex, neurocutaneous lesions in herpes virus herpes virus infection herpes zoster herpes, genital heterophile antibody test hiccoughs hiccoughs, intractable highly active antiretroviral therapy hip pain hippocampal atrophy hippocampus hippocampus, hyperintense hirsutism histiocytosis histoplasmosis HLA hoarseness Hodgkin's disease Hodgkin's disease, neurologic involvement with Hoesch test homosexual Horner's syndrome horse bite hospice hot bath test hot tub hot, red, angry babies H-reflex testing human granulocytic anaplasmosis human herpesvirus 6 human immunodeficiency virus type 1 human immunodeficiency virus type 1, acute infection human parechovirus human T-lymphotropic virus type I(HTLV-I) hydatid cyst hydrocephalus hydrocephalus, acute hydrocephalus, non-communicating(obstructive) hydronephrosis hydrophobia hyperactivity hyperamylasemia hyperbilirubinemia hyperbilirubinemia, CNS abnormality after hypercapnia hypercoagulable state hyperekplexia hypereosinophilic syndrome(HES) hyperesthesia hypergammaglobulinemia hyperglycemia hyperhidrosis hyperkalemia hyperparathyroidism hyperphosphatasia hyperpigmentation of skin hyperpyrexia, CNS disorder causing hyperreflexia hypersensitivity reaction hypersomnia hypertension hypertensive crisis hyperthermia hyperthyroidism hypertonia hypertriglyceridemia hypertrophic intracranial pachymeningitis hypertrophic spinal pachymeningitis hypertropia hyperviscosity hypoalbuminemia hypocalcemia hypofibrinogenemia hypogammaglobulinemia hypoglossal nerve paralysis hypoglycemia hypoglycorrhachia hypoglycorrhachia, causes of hypokalemia hypokinetic left ventricle hyponatremia hyponatremia with cerebral disorders hypophysitis, IgG4-related hypopituitarism hypopyon hyporeflexia hypotension, systemic hypothalamus hypothalamus, disturbance of hypothalamus, lesion of hypothermia hypothyroidism hypotonia hypotonia, infants hypoxia hypoxia, newborn hypoxic encephalopathy iatrogenic neurologic disorders ibuprofen idiopathic CD4+lymphopenia idiopathic midline granuloma IFA IgG4, serum IgG4-related disease ileus, paralytic imbalance immediate recall immune checkpoint inhibitors immune effector cell-associated neurotoxicity syndrome immune reconstitution inflammatory syndrome immune reconstitution inflammatory syndrome, paradoxical immune reconstitution inflammatory syndrome, unmasked immune-related adverse events immunization, neurologic complications with immunocompetent immunofluorescence immunofluorescent exam of CSF cells immunofluorescent"band"test immunohistochemistry immunologic disease immunomodulation immunosuppression immunosuppressive agents immunotherapy implantable cardioverter defibrillator impotence in situ hybridization inappropriate antidiuretic(A.D.H.)hormone inappropriate antidiuretic(A.D.H.)hormone, CNS involvement with inattention incidence incidental finding inclusion bodies inclusion bodies, eosinophilic cytoplasmic inclusion bodies, eosinophilic intranuclear inclusion bodies, intracytopasmic inclusion bodies, intranuclear inclusion body myositis incontinence, fecal India india-ink preparation, CSF Indonesia infantile bilateral striatal necrosis infection infectious mononucleosis infectious mononucleosis, neurologic findings with infliximab influenza influenza A virus influenza B virus influenza immunization infusion-associated reaction in-hospital insect sting insomnia insular cortex intellectual deficit intellectual deterioration intelligence quotient interferon interferon alpha interferon beta 1-b interferon inducer interferonopathy internal capsule internal carotid artery internuclear ophthalmoplegia internuclear ophthalmoplegia, bilateral internuclear ophthalmoplegia, unilateral interstitial pulmonary fibrosis intestinal biopsy intestinal pseudoobstruction intracardiac device intracardiac devices intracerebral hemorrhage intracerebral hemorrhage, causes of intracerebral hemorrhage, differential diagnosis of intracerebral hemorrhage, multiple intracerebral hemorrhage, small intracerebral hemorrhage, volume intracerebral hemorrhage, young adult intracranial hemorrhage intracranial hypertension, benign intracranial hypotension intracranial pressure monitoring intracranial pressure monitoring, complications intracranial pressure, increased intranasal medication intrathecal antispasticity drugs intrathecal chemotherapy intrathecal pump intrauterine intrauterine infection intrauterine infection, viral intrauterine infection, viral of CNS intravenous intravenous drug abuse intravenous line intraventricular catheter intraventricular hemorrhage intubation iododeoxyuridine ipilimumab iritis iron, serum iron, serum, elevated irritability isoniazid Jakob-Creutzfeldt disease Janeway spots jaundice jaw claudication jaw pain joint steroid injection jugular vein, thrombosis of Kawasaki disease keratitis keratitis, interstitial kernicterus Kernig's sign ketogenic diet klebsiella pneumoniae knee arthroplasty Korsakoff's psychosis labyrinthitis lacrimation lactic acidemia lactic dehydrogenase(LDH) lactobacillus lacunar infarction laminar necrosis, cortical lamotrigine Lassa fever lateral rectus palsy Latin America laughing, pathologic leg swelling leg weakness, bilateral leg weakness, unilateral Legionella pneumophilia Legionnaires'disease leishmaniasis Lemierre's syndrome lenticular nucleus, lesion of lenticular nucleus, lesion of, bilateral leptospirosis lesions too numerous to count lethargy leucine rich glioma inactivated 1 antibodies leukemia leukemia, neurologic findings assoc.with leuko-araiosis leukocyte peroxidase leukocytosis leukodystrophy leukoencephalitis, acute necrotizing hemorrhagic leukoencephalopathy leukoencephalopathy, differential diagnosis leukoencephalopathy, toxic leukopenia levamisole level of consciousness, decreased Liberia libido, decreased life expectancy limbic encephalitis limbic system lissencephaly listeria monocytogenes listeriosis, CNS livedo reticularis liver biopsy liver disease liver function enzymes liver nodules liver scan liver transplantation low back pain low back pain, differential diagnosis of low birth weight L-tryptophan lumbar puncture lumbar puncture, complications of lumbar puncture, CSF not obtained on lumbar puncture, delayed lumbar puncture, indications for lumbar puncture, repeated lumbar sacral spine, abnormality of lumbosacral plexopathy lumbosacral plexus lumbosacral plexus, neuritis lung biopsy lung nodule lung transplantation lupus nephritis Lyme disease Lyme disease, children lymph node biopsy lymphadenitis lymphadenopathy lymphadenopathy, axillary lymphadenopathy, cervical lymphadenopathy, hilar lymphadenopathy, paraaortic lymphocytic choriomeningitis lymphocytic interstitial pneumonitis lymphocytic meningoradiculitis lymphocytosis lymphohistiocytosis lymphoma lymphoma involving CNS lymphoma, primary of CNS lymphoma, systemic lymphomatoid granulomatosis lymphopenia lysosomal storage disease macrocephaly malaise malaria malaria, cerebral malformation, CNS, congenital malignancy screen malignancy, occult malignant histiocytosis malignant hyperpyrexia mammillary bodies marche a petits pas Marcus Gunn pupil Marfan syndrome marihuana Massachusetts mastoiditis meconium staining median neuropathy medical-legal aspects of neurology medication withdrawal medulla oblongata, lesion of medullary streaks medullary veins melanoma, malignant MELAS syndrome 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sporotrichosis meningitis, syphilitic meningitis, TB meningitis, treatment of meningitis, treatment of, empirical meningitis, viral etiology in meningitis-encephalitis PCR panel meningococcemia meningoencephalitis meningoencephalitis, amoebic meningoencephalitis, hemorrhagic meningoencephalitis, mumps meningoencephalomyelitis meningoencephalopathy meningomyelitis mental retardation mental status, abnormal MERS mesial temporal lobe mesial temporal sclerosis metabolic acidosis metabolic alkalosis metabolic disorder, primary methacholine methadone methicillin resistant staphylococcus aureus methotrexate methylhydrazine derivatives Mexico microabscesses, cerebral microaneurysm, retinal microangiopathic hemolytic anemia microangiopathy, brain microcephaly microglial nodules microhemorrhage, intracerebral microinfarcts micropthalmia microscopic polyangiitis midazolam midbrain, lesion of middle cerebral artery territory infarction, malignant middle cerebral artery, occlusion of migraine migraine, confusional state and delirium with migraine, mental disorder associated with milk mimics miosis misdiagnosis mitochondrial disease mitochondrial encephalomyopathy mitral valve lesion mitral valve prolapse mitral valve regurgitation mitral valve vegetation MNGIE syndrome molecular genetics mongolism Monkeypox infection monoamine oxidase inhibitors monoamines monoamines, brain monoclonal antibodies monoclonal gammopathy monoclonal gammopathy of uncertain significance monocytosis monomelic amyotrophy mononeuritis multiplex mononeuritis multiplex, causes of mononeuropathy mononeuropathy multiplex monoparesis moro reflex mortality mosquito motor neuron disease Mount Fuji sign mouse movement disorder movement disorder, drug induced movement disorder, extrapyramidal movement disorder, extrapyramidal-treatment of MRI MRI pattern MRI, abdomen MRI, abnormal MRI, abnormal, seizure causing MRI, abscess, cerebral MRI, angiography MRI, CAT scan compared to MRI, contrast enhanced MRI, contrast enhanced, subependymal MRI, cortical enhancement MRI, cranial nerves MRI, diffusion weighted MRI, disappearing lesion on MRI, emergent MRI, false negative MRI, fast MRI, FLAIR MRI, gradient-echo MRI, gray matter enhancement MRI, gyral enhancement MRI, high signal foci on MRI, high signal intensity of basal ganglia MRI, indications for MRI, lesion burden MRI, linear enhancement MRI, mass effect on MRI, muscle MRI, negative MRI, optic nerve MRI, punctate pattern MRI, ring sign MRI, ring sign, open MRI, serial MRI, skull bone changes MRI, spinal cord MRI, spinal cord, increased intramedullary cord signal MRI, spine MRI, starfield pattern MRI, sulcal hyperintensity MRI, sunburst pattern MRI, susceptibility weighted MRI, T1 weighted high signal foci MRI, target sign MRI, venography MRS mucormycosis multinucleated giant cell multiple myeloma multiple organ infarct multiple sclerosis multiple sclerosis, acute multiple sclerosis, differential diagnosis of multiple sclerosis, treatment of multisystem inflammatory syndrome in children mumps virus muromonab-CD3 muscle biopsy muscle cramp muscle pain muscle relaxant muscle spasm muscle stiffness muscle swelling muscle swelling, focal muscle tenderness muscle weakness muscle weakness, proximal muscle weakness, sudden onset of mutism myasthenia gravis myasthenia gravis, precipitating factors myasthenia gravis, receptor site in myasthenic crisis mycoplasma mycoplasma pneumoniae mycotic aneurysm myelitis myelitis, longitudinal myelitis, post infectious myelitis, transverse myelitis, transverse, recurrent myelogram myelopathy myelopathy, ascending myelopathy, chronic progressive myelopathy, vacuolar myeloradiculitis myeloradiculopathy myocardial abscess myocardial infarction myocardial infarction, acute myocardial injury myocarditis myoclonic jerks myoclonus myoclonus, epilepsy myoclonus, febrile myoclonus, segmental myocytolysis myoglobinuria myopathy myopathy, acute myopathy, drug-induced myopathy, necrotizing myopathy, steroid induced myopathy, thyroid disease causing myopathy, toxic myositis myositis, acute of childhood myositis, bacterial myositis, focal myositis, post infectious myositis, pterygoid narcolepsy nasal discharge nasal obstruction nasal polyp nasal septum, perforation of nasal speech nasal stuffiness nausea and vomiting neck pain neck stiffness neck tenderness neck weakness necrotizing granuloma negative Negri bodies neisseria meningitis neonatal abstinence syndrome neoplasm, hormone producing, ectopic neoplasm, intracranial neoplasm, metastatic to CNS neoplasm, metastatic to CNS-treatment of neoplasm, pituitary neoplasm, primary intracerebral neoplasm, primary of CNS neoplasm, primary of CNS-incidence of neoplasm, primary of CNS-infants neoplasm, primary of CNS-survival neoplastic angioendotheliosis nephritis nephrotic syndrome nerve biopsy nerve conduction studies nerve conduction studies, motor nerve root enhancement neural tube defect neurexin-3 alpha antibodies neuritis 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