Search
Recent Searches
Index
Sections
Symptoms
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
Cardiovascular Disorders
Clinical Pharmacology
Critical Care Medicine
Dermatologic Disorders
Ear, Nose, Throat, and Dental Disorders
Endocrine and Metabolic Disorders
Eye Disorders
Gastrointestinal Disorders
Genitourinary Disorders
Gynecology and Obstetrics
Hematology and Oncology
Hepatic and Biliary Disorders
Immunology; Allergic Disorders
Infectious Diseases
Injuries; Poisoning
Musculoskeletal and Connective Tissue Disorders
Neurologic Disorders
Nutritional Disorders
Pediatrics
Psychiatric Disorders
Pulmonary Disorders
Special Subjects
view all sections
Abdominal Pain, acute
Abdominal pain, chronic
Alopecia
Amnesia
Bleeding, excessive
Blurred vision
Chest pain (in cardiovascular)
Chest pain (in PUL)
Constipation (in GI)
Constipation (in PED)
Cough
Crying
Deafness, Sudden
Diarrhea (in GI)
Diarrhea (in PED)
Diplopia
Dry mouth
Dysmenorrhea
Dyspepsia
Dysphagia
Dyspnea
Dysuria
Earache
Epistaxis
Erectile dysfunction
Eye pain
Fever
Fever (in PED)
Gas
Halitosis
Headache
Hearing loss
Hematuria
Hemoptysis
Hiccups
Hirsutism
Incontinence, urinary
Jaundice
Joint pain, monarticular
Joint pain, polyarticular
Knee pain
Nasal congestion and rhinorrhea
Neck and back pain
Nipple discharge
Otorrhea
Pain
Pain, chronic
Palpitations
Pelvic pain
Pelvic pain during early pregnancy
Polyuria and frequency
Pruritus
Red eye
Scrotal pain
Sore throat
Stomatitis
Stridor
Syncope
Tearing
Tinnitus
Toothache
Urinary retention
Vaginal bleeding
Vaginal bleeding during early pregnancy
Vaginal bleeding during late pregnancy
Vaginitis
Vertigo
Vision loss, acute
Vomiting (in GI)
Vomiting (in PED)
Vomiting during early pregnancy
Wheezing
view all symptoms
Sections
Cardiovascular Disorders
Clinical Pharmacology
Critical Care Medicine
Dermatologic Disorders
Ear, Nose, Throat, and Dental Disorders
Endocrine and Metabolic Disorders
Eye Disorders
Gastrointestinal Disorders
Genitourinary Disorders
Gynecology and Obstetrics
Hematology and Oncology
Hepatic and Biliary Disorders
Immunology; Allergic Disorders
Infectious Diseases
Injuries; Poisoning
Musculoskeletal and Connective Tissue Disorders
Neurologic Disorders
Nutritional Disorders
Pediatrics
Psychiatric Disorders
Pulmonary Disorders
Special Subjects
Resources
Ready Reference Guides
Trade Names of Some Commonly Used Drugs
About
The Merck Manual
Multimedia
Selected Links
Section
Neurologic Disorders
Neurologic Disorders
Approach to the Neurologic Patient
Introduction
History
Neurologic Examination
Mental status
Cranial nerves
Motor system
Muscle strength
Gait, stance, and coordination
Sensation
Reflexes
Autonomic nervous system
Cerebrovascular examination
Neurologic Diagnostic Procedures
Lumbar puncture (spinal tap)
CT
MRI
Echoencephalography
Cerebral angiography
Duplex Doppler ultrasonography
Myelography
EEG
Measurement of evoked responses (potentials)
Electromyography and nerve conduction velocity studies
Autonomic Nervous System
Introduction
Anatomy
Physiology
Evaluation
History
Physical examination
Laboratory testing
Autonomic Neuropathies
Horner's Syndrome
Multiple System Atrophy
Symptoms and Signs
Diagnosis
Treatment
Pure Autonomic Failure
Brain Infections
Introduction
Brain Abscess
Symptoms, Signs, and Diagnosis
Treatment
Encephalitis
Etiology and Pathophysiology
Symptoms and Signs
Diagnosis
Prognosis and Treatment
Helminthic Infections
Neurocysticercosis
Other infections
Prion Diseases
Creutzfeldt-Jakob Disease (CJD)
Symptoms, Signs, and Prognosis
Diagnosis and Prevention
Gerstmann-Sträussler-Scheinker Disease
Fatal Insomnia
Progressive Multifocal Leukoencephalopathy (PML)
Symptoms and Signs
Diagnosis and Treatment
Rabies
Symptoms and Signs
Diagnosis and Treatment
Prevention
Subdural Empyema
Symptoms, Signs, and Diagnosis
Treatment
Coma and Impaired Consciousness
Introduction
Pathophysiology
Etiology
Symptoms and Signs
Diagnosis
History
General physical examination
Neurologic examination
Eye examination
Respiratory patterns
Tests
Prognosis
Treatment
Endotracheal intubation
ICP control
Long-term care
Brain Death
Diagnosis
Prognosis
Locked-in Syndrome
Diagnosis
Prognosis
Treatment
Vegetative State
Symptoms and Signs
Diagnosis
Prognosis
Treatment
Craniocervical Junction Abnormalities
Craniocervical Junction Abnormalities
Etiology
Symptoms and Signs
Diagnosis
Treatment
Delirium and Dementia
Introduction
Behavioral and Psychologic Symptoms of Dementia
Etiology
Evaluation
Treatment
Environmental measures
Caregiver support
Drugs
Delirium
Etiology
Pathophysiology
Symptoms and Signs
Diagnosis
Mental status examination
History
Physical examination
Testing
Prognosis
Treatment
General measures
Drugs
Prevention
Dementia
Etiology
Symptoms and Signs
Early
Intermediate
Late (severe)
Diagnosis
Clinical criteria
Laboratory testing
Neuroimaging
Neuropsychologic testing
Prognosis
Treatment
Patient safety
Environmental measures
Drugs
Caregiver assistance
End-of-life issues
Alzheimer's Disease
Etiology
Pathophysiology
Symptoms and Signs
Diagnosis
Differential diagnosis
Prognosis
Treatment
Prevention
Vascular Dementia
Symptoms and Signs
Diagnosis
Prognosis
Treatment
Lewy Body Dementia
Symptoms and Signs
Diagnosis
Treatment
HIV-Associated Dementia
Symptoms and Signs
Diagnosis
Prognosis and Treatment
Frontotemporal Dementia
Symptoms and Signs
Frontal variant FTD
Primary progressive aphasia
Diagnosis
Prognosis and Treatment
Normal–Pressure Hydrocephalus
Symptoms
Diagnosis
Treatment
Demyelinating Disorders
Introduction
Multiple Sclerosis (MS)
Pathophysiology
Symptoms and Signs
Cranial nerves
Motor
Cerebellar
Sensory
Spinal cord
Diagnosis
Prognosis
Treatment
Neuromyelitis Optica
Function and Dysfunction of the Cerebral Lobes
Introduction
Frontal lobes
Parietal lobes
Temporal lobes
Occipital lobe
Insula
Pathophysiology
Cerebral dysfunction syndromes
Agnosia
Diagnosis
Prognosis and Treatment
Amnesias
Pathophysiology and Etiology
Diagnosis and Treatment
Transient Global Amnesia
Symptoms, Signs, and Diagnosis
Prognosis and Treatment
Aphasia
Symptoms and Signs
Diagnosis
Prognosis and Treatment
Apraxia
Symptoms, Signs, and Diagnosis
Prognosis and Treatment
Headache
Introduction
Evaluation
History
Physical examination
Testing
Cluster Headache
Symptoms, Signs, and Diagnosis
Treatment
Idiopathic Intracranial Hypertension
Symptoms and Signs
Diagnosis and Treatment
Migraine
Epidemiology and Pathophysiology
Symptoms and Signs
Diagnosis
Prognosis and Treatment
Acute migraine headache
Prevention
Post–Lumbar Puncture and Low-Pressure Headache
Tension-Type Headache
Intracranial and Spinal Tumors
Introduction
