Juan E. Small, MD is the Section Chief of the Neuroradiology Division and the Director of Neuroimaging Education at Lahey Hospital and Medical Center in Burlington, Massachusetts. He is the lead author of Neuroradiology: Key Differential Diagnoses and Clinical Questions. Dr. Small joined Lahey in 2009 after completing his medical degree at Harvard Medical School in Boston; a Master's in Neuroscience at the University of Oxford; a radiology residency at Brigham and Women's Hospital; and a neuroradiology fellowship at Massachusetts General Hospital in Boston. Dr. Small is board certified in diagnostic radiology and neuroradiology.

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• SECTION I - Clinical EvaluationClinical Neurologic EvaluationLaboratory Testing in NeurologyNeuroimaging in Neurologic DisordersSECTION II - Cranial NervesCranial Nerve I: OlfactoryCranial Nerve II: Optic Nerve and Visual SystemCranial Nerves III, IV, and VI: Oculomotor, Trochlear, and Abducens Nerves: Ocular Mobility and PupilsCranial Nerve V: TrigeminalCranial Nerve VII: FacialCranial Nerve VIII: Auditory and VestibularCranial Nerves IX and X: Glossopharyngeal and VagusCranial Nerves XI and XII: Accessory and HypoglossalSECTION III - Neurologic Emergencies and Critical CareNeurologic Emergencies and Neurocritical CareComa, Vegetative State, and Brain DeathSECTION IV - Cerebrovascular DiseasesAnatomic Aspects of Cerebral CirculationIschemic StrokeIntracerebral HemorrhageSubarachnoid HemorrhageCerebral Venous ThrombosisSECTION V - TraumaTrauma to the BrainTrauma to the Spine and Spinal CordSECTION VI - Headache and PainPrimary and Secondary HeadachePain Pathophysiology and ManagementSECTION VII - Epilepsy and Sleep DisordersEpilepsySleep DisordersSECTION VIII - Cognitive and Behavioral DisordersNeurocognitive ExaminationDelirium and Acute EncephalopathiesDementia: Mild Cognitive Impairment, Alzheimer Disease, Lewy Body Dementia, Frontotemporal Lobar Dementia, Vascular DementiaSECTION IX - Movement Disorders and GaitHypokinetic Movement DisordersParkinson DiseaseAtypical Parkinsonian SyndromesTremorsDystoniaChoreaMyoclonusTic DisordersMiscellaneous Movement Disorders and TherapyMedication-Induced Movement DisordersPsychogenic Movement DisordersSurgical Treatment of Movement DisordersGait DisordersSECTION X - Multiple Sclerosis and Other Demyelinating DisordersMultiple SclerosisOther Central Nervous System Demyelinating DisordersSECTION XI - Psychiatric DisordersMood and Psychotic DisordersOther Psychiatric DisordersSECTION XII - Nutritional Disorders, Alcohol and Drug DependencyAlcohol and Drug Abuse and DependenceSECTION XIII - Infectious DiseasesBacterial DiseasesViral DiseasesParasitic and Fungal Disorders and NeurosarcoidosisNeurosarcoidosisInfections in the Immunocompromised HostSECTION XIV - Neuro-OncologyBrain TumorsSpinal Cord TumorsParaneoplastic Neurologic DisordersSECTION XV - Disorders of the Autonomic Nervous SystemAutonomic DisordersSyncopeSECTION XVI - Spinal Cord DisordersAnatomic Aspects of Spinal Cord DisordersMyelopathiesSECTION XVII - Radiculopathies and PlexopathiesCervical RadiculopathyLumbar RadiculopathyBack PainBrachial and Lumbosacral PlexopathiesSECTION XVIII - MononeuropathiesMononeuropathies of the Upper ExtremitiesMononeuropathies of the Lower ExtremitiesSECTION XIX - Motor Neuron DisordersAmyotrophic Lateral SclerosisOther Motor Neuron Diseases and Motor NeuropathiesSECTION XX - Neuromuscular Hyperactivity DisordersStiff-Person SyndromeOther Peripheral Hyperexcitability SyndromesSECTION XXI - PolyneuropathiesHereditary PolyneuropathiesAcquired PolyneuropathiesSECTION XXII - Neuromuscular Transmission DisordersMyasthenia GravisOther Neuromuscular Transmission DisordersSECTION XXIII - MyopathiesHereditary MyopathiesAcquired Myopathies