Patients & CaregiversHealthcare ProfessionalsWorldwide
HomeAbout MerckProductsNewsroomInvestor RelationsCareersResearchLicensingThe Merck Manuals
THE MERCK MANUAL MEDICAL LIBRARY: The Merck Manual of Medical Information--Home Edition
Tips for better results
ABCDEFGHI
JKLMNOPQR
STUVWXYZ
Sections
Resources
Index
hahchdhehihlhmhohthuhy
Type in the first few letters of a word to get there faster:
Go

He

Head

see also Brain

  • banging of

  • What Are Stress-Related Behaviors?Sidebar

  • injury to

  • Head Injuries
    Herniation: The Brain Under PressureFigures
    Recognizing a Serious Head InjurySidebar

  • in children

  • Head Injuries: Minor Head Injury

  • coma with

  • Stupor and Coma: Prognosis

  • consciousness alterations with

  • Stupor and Coma: Causes
    Some Causes of Stupor and Coma Tables

  • dementia with

  • Dementia: Other Dementias

  • in newborn

  • Birth Injury: Head Injury

  • in Paget's disease

  • Paget's Disease of Bone: Symptoms

    Headaches

    Headaches
    How Headaches Differ Tables

  • in brain hemorrhage

  • Hemorrhagic Stroke: Symptoms

  • in brain tumor

  • How Headaches Differ Tables
    Brain Tumors: Symptoms

  • cluster

  • How Headaches Differ Tables
    Cluster Headaches

  • information resources on

  • Family Planning

  • migraine

  • How Headaches Differ Tables
    Migraines
    Drugs Used to Treat MigrainesTables

  • tension-type

  • How Headaches Differ Tables
    Tension-Type Headaches

    Head injury

  • in children

  • Skull Fracture: Skull Fractures in Children

    Health care practitioners

  • communication with

  • Where to Start
    Making the Most of a Health Care Visit: Subsequent Visits
    Confidentiality and HIPAA
    Adherence to Drug Treatment: Improving Adherence

  • decision making by

  • Medical Decision Making

  • for dying person

  • Choices to Make Before Death: Choosing a Set of Health Care Practitioners to Provide Care

  • medical record release by

  • Handling Medical Records

  • mental health

  • Types of Mental Health Care Practitioners Tables

  • needlestick injury in

  • Human Immunodeficiency Virus (HIV) Infection: Transmission of Infection
    Human Immunodeficiency Virus (HIV) Infection: Prevention

  • second opinion from

  • Getting a Second Opinion
    How to Get a Second OpinionSidebar

  • selection of

  • Is This Doctor the Right One?Sidebar

  • visit to

  • When to See a Doctor
    Making the Most of a Health Care Visit

    Health care professionals

  • communication with

  • Choices to Make Before Death

  • disclosure by

  • Confidentiality and HIPAA

  • mental health

  • Treatment of Mental Illness

    Health care system

    Making the Most of Health Care

  • cost control and

  • How Health Care Is Paid For: Controlling Health Care Costs

  • emergency department visits and

  • When to See a Doctor: Visits to the Emergency Department

    Health insurance

    How Health Care Is Paid For

  • drug policies of

  • How Health Care Is Paid For: Paying for Drugs

    Health Insurance Portability and Accountability Act (HIPPA)

    Handling Medical Records

    Health Insurance Portability and Accountability Act (HIPAA)

    Confidentiality and HIPAA

    Health maintenance organizations (HMOs)

    How Health Care Is Paid For: HMOs

    Hearing

  • age-associated changes in

  • Changes in the Body: Ears
    Effects of Aging

  • loss of

  • Hearing Loss and Deafness

  • after eardrum perforation

  • Eardrum Perforation: Treatment

  • age-related (presbycusis)

  • Effects of Aging

  • aids for

  • Hearing Loss and Deafness: Hearing Aids
    Hearing Aids: Amplifying the SoundFigures

  • in autoimmune disorders

  • Hearing Loss and Deafness: Autoimmune Disorders

  • in children

  • Hearing Deficits
    Risk Factors for Hearing Deficits in ChildrenSidebar

  • conductive

  • Hearing Loss and Deafness: Causes
    Causes of Hearing LossSidebar

  • drug-related

  • Hearing Loss and Deafness: Drugs

  • in ear infection

  • Hearing Loss and Deafness: Ear Infections

  • information resources on

  • De - Dr

  • noise-related

  • Ears: Inner Ear
    Hearing Loss and Deafness: Noise
    Hearing Loss and Deafness: Prevention and Treatment

  • in osteogenesis imperfecta

  • Osteogenesis Imperfecta

  • in otosclerosis

  • Hearing Loss and Deafness: Otosclerosis
    Hearing Loss and Deafness: Prevention and Treatment

  • prevention of

  • Hearing Loss and Deafness: Prevention and Treatment

  • rehabilitation for

  • Hearing Loss and Deafness: Other Means of Coping With Hearing Loss

  • sensorineural

  • Hearing Loss and Deafness: Causes
    Causes of Hearing LossSidebar

  • sudden

  • Hearing Loss and Deafness: Sudden Deafness

  • tests for

  • Hearing Loss and Deafness: Diagnosis
    Measurement of LoudnessSidebar

  • treatment of

  • Hearing Loss and Deafness: Prevention and Treatment
    Hearing Aids: Amplifying the SoundFigures
    Cochlear Implant: Aid for the Severely to Profoundly DeafFigures

  • tumors and

  • Hearing Loss and Deafness: Tumors

  • temporary threshold shift in

  • Hearing Loss and Deafness: Noise

  • testing of

  • Selected Screening Schedule for AdultsTables
    Hearing Loss and Deafness: Diagnosis
    Measurement of LoudnessSidebar

    Hearing aids

    Hearing Loss and Deafness: Hearing Aids
    Hearing Aids: Amplifying the SoundFigures

  • for children

  • Hearing Deficits: Treatment

    Heart

    see also entries at Cardiac; Cardio-

  • abnormal rhythms of

  • see also Arrhythmias; Heartbeats
    Tracing the Heart's Electrical PathwayFigures
    Keeping the Beat: Artificial PacemakersFigures
    Some Drugs Used to Treat ArrhythmiasTables

  • age-associated changes in

  • Changes in the Body: Heart and Blood Vessels
    Effects of Aging

  • anatomy of

  • Heart
    A Look Into the HeartFigures
    Supplying the Heart With BloodFigures

  • aneurysm of

  • Complications of a Heart AttackSidebar

  • angina of

  • Understanding Percutaneous Coronary Intervention (PCI)Figures
    Coronary Artery Bypass GraftingFigures
    Angina
    Drugs Used to Treat Coronary Artery DiseaseTables

  • travel and

  • Specific Medical Conditions and Travel: Heart Disease

  • arteries of

  • see Coronary arteries

  • of athlete

  • Athletic Heart SyndromeSidebar

  • auscultation of

  • Diagnosis: Medical History and Physical Examination

  • biopsy of

  • Heart Tumors: Diagnosis

  • birth defects of

  • Other Birth DefectsTables
    Heart Defects
    Patent Ductus Arteriosus: Failure to CloseFigures
    Septal Defect: A Hole in the Heart's WallFigures
    Tetralogy of Fallot: Four DefectsFigures

  • blood flow in

  • Heart: Function of the Heart
    A Look Into the HeartFigures

  • during pregnancy

  • Physical Changes: Heart and Blood Flow

  • bypass surgery of

  • Coronary Artery Disease: Coronary Artery Bypass Grafting
    Coronary Artery Bypass GraftingFigures
    Angina: Revascularization Procedures

  • cancer of

  • Cancerous Tumors

  • catheterization of

  • Diagnosis: Cardiac Catheterization and Coronary Angiography

  • in angioplasty

  • Dilated Cardiomyopathy: Diagnosis

  • in cardiomyopathy

  • Dilated Cardiomyopathy: Diagnosis

  • in pericarditis

  • Chronic Pericarditis: Symptoms and Diagnosis

  • coronary artery disease of

  • Coronary Artery Disease
    Understanding Percutaneous Coronary Intervention (PCI)Figures
    Coronary Artery Bypass GraftingFigures
    Drugs Used to Treat Coronary Artery DiseaseTables

  • disease of

  • diagnosis of

  • Diagnosis
    ECG: Reading the WavesFigures
    Holter Monitor: Continuous ECG ReadingsFigures

  • in DiGeorge anomaly

  • DiGeorge Anomaly

  • fainting in

  • Fainting: Problems With the Heart's Pumping

  • information resources on

  • Ca - Cy

  • in Kawasaki disease

  • What Is Kawasaki Disease?Sidebar

  • low blood pressure with

  • Low Blood Pressure: Causes
    Fainting

  • oral contraceptive use and

  • Contraception: Oral Contraceptives

  • over-the-counter drug precautions in

  • Chronic Disorders and Over-the-Counter Drugs Tables

  • pericardial

  • Acute Pericarditis
    Cardiac Tamponade: The Most Serious Complication of PericarditisFigures
    Chronic Pericarditis

  • in pregnancy

  • Risk Factors Present Before Pregnancy: Heart Disease
    Risk Factors That Develop During Pregnancy: Peripartum Cardiomyopathy

  • prevention of

  • Selected Strategies for Preventing Some Major Health ProblemsTables

  • rehabilitation for

  • Specific Problems: Heart Disorders

  • sexual activity and

  • Sexual Activity and Heart DiseaseSidebar

  • shock in

  • Shock: Cardiogenic Shock

  • symptoms of

  • Symptoms
    Symptoms: Swelling, Numbness, and Changes in Skin Color

  • during travel

  • Specific Medical Conditions and Travel: Heart Disease

  • electrical pathway of

  • Abnormal Heart Rhythms: Normal Electrical Pathway
    Tracing the Heart's Electrical PathwayFigures

  • enlargement of

  • Diagnosis: Radiologic Procedures
    High Blood Pressure: Complications

  • in acromegaly

  • Acromegaly and Gigantism: Symptoms

  • failure of

  • see Heart failure

  • inflammation

  • see Endocarditis; Pericarditis

  • lightning effects on

  • Lightning Injuries: Symptoms

  • murmurs of

  • see Murmurs

  • muscle of (myocardium)

  • Muscles

  • blood supply of (coronary arteries)

  • Heart: Blood Supply of the Heart
    Supplying the Heart With BloodFigures

  • dysfunction of

  • Cardiomyopathy
    Types of CardiomyopathyFigures

  • inflammation of

  • Heart Failure: Systolic Dysfunction
    Dilated Cardiomyopathy: Causes

  • in rheumatic fever

  • Rheumatic Fever: Heart

  • rupture of

  • Complications of a Heart AttackSidebar

  • radiation injury to

  • Radiation Injury: Radiation Therapy for Cancer

  • rupture of

  • Complications of a Heart AttackSidebar

  • sarcoidosis of

  • Sarcoidosis: Symptoms

  • scar tissue of

  • Complications of a Heart AttackSidebar

  • sounds of

  • Heart

  • fourth

  • High Blood Pressure: Diagnosis

  • in high blood pressure

  • High Blood Pressure: Diagnosis

  • transplantation of

  • Heart Transplantation

  • in heart defects

  • Heart Defects: Treatment

  • in heart failure

  • Heart Failure: Other Measures

  • tumors of

  • Heart Tumors
    How a Myxoma Can Block Blood Flow in the HeartFigures
    Cancer of the Lungs: Symptoms and Complications

  • valves of

  • Heart
    A Look Into the HeartFigures

  • in cardiomyopathy

  • Dilated Cardiomyopathy: Symptoms
    Hypertrophic Cardiomyopathy: Symptoms

  • disease of

  • Heart Valve Disorders
    Understanding Stenosis and RegurgitationFigures

  • in children

  • Heart Defects: Aortic Valve Stenosis

  • in heart failure

  • Heart Failure: Systolic Dysfunction
    Heart Failure: Diastolic Dysfunction

  • infection of (endocarditis)

  • Infective Endocarditis
    An Inside View of Infective EndocarditisFigures
    Which Procedures Require Preventive Antibiotics?Tables
    Pseudomonas Infections: Symptoms and Diagnosis
    Staphylococcal Infections: Symptoms
    Streptococcal Infections: Treatment

  • in Marfan syndrome

  • Marfan Syndrome

  • replacement of

  • Mitral Regurgitation: Treatment
    Replacing a Heart ValveFigures
    Aortic Stenosis: Treatment

  • valvuloplasty of

  • Diagnosis: Cardiac Catheterization
    Mitral Stenosis: Prevention and Treatment
    Aortic Stenosis: Treatment

    Heart and

  • abnormal rhythms of

  • Abnormal Heart Rhythms

    Heart attack

    Acute Coronary Syndromes (Heart Attack; Myocardial Infarction; Unstable Angina)

  • cholesterol level and

  • Hyperlipoproteinemia: Symptoms

  • complications of

  • Acute Coronary Syndromes (Heart Attack; Myocardial Infarction; Unstable Angina): Complications
    Complications of a Heart AttackSidebar

  • estrogen and

  • Menopause: Hormone Therapy

  • in hypercholesterolemia

  • Hyperlipoproteinemia: Hereditary Hyperlipoproteinemias

  • mitral regurgitation with

  • Mitral Regurgitation: Cause

  • oral contraceptives and

  • Contraception: Disadvantages

  • pericarditis after

  • Acute Pericarditis

  • radionuclide imaging after

  • Diagnosis: Radionuclide Imaging

  • rehabilitation after

  • Specific Problems: Heart Disorders

  • shock with

  • Shock: Prognosis and Treatment

  • ventricular fibrillation after

  • Ventricular Fibrillation: Treatment

  • ventricular premature beats after

  • Ventricular Premature Beats: Treatment

    Heartbeats (heart rate)

    Heart: Regulation of the Heart
    Apnea of Prematurity: Symptoms and Diagnosis

  • in apnea of prematurity

  • Apnea of Prematurity: Symptoms and Diagnosis

  • in atrial fibrillation and flutter

  • Atrial Fibrillation and Atrial Flutter

  • awareness of (palpitations)

  • Symptoms: Palpitations

  • in arrhythmias

  • Abnormal Heart Rhythms: Symptoms

  • in mitral regurgitation

  • Mitral Regurgitation: Symptoms

  • control of

  • Abnormal Heart Rhythms

  • electrocardiogram of

  • see also Electrocardiography
    Diagnosis: Electrocardiography
    ECG: Reading the WavesFigures

  • fetal

  • Medical Care: Follow-up Examinations
    Labor
    Labor
    Monitoring the FetusSidebar
    Fetus or Newborn Problems: Fetal Distress

  • in heart block

  • Heart Block

  • in heart disease

  • Symptoms: Palpitations
    Diagnosis: Medical History and Physical Examination

  • in long QT syndrome

  • Long QT Syndrome

  • normal

  • Abnormal Heart Rhythms

  • in pacemaker dysfunction

  • Pacemaker Dysfunction

  • in paroxysmal supraventricular tachycardia

  • Paroxysmal Supraventricular Tachycardia (SVT, PSVT)

  • during pregnancy

  • Physical Changes: Heart and Blood Flow
    Physical Changes: Hormones

  • premature

  • atrial

  • Atrial Premature Beats

  • ventricular

  • Ventricular Premature Beats

  • in sick sinus syndrome

  • Pacemaker Dysfunction

  • target

  • Estimating Target Heart RateSidebar
    Starting an Exercise Program: Aerobic Exercise
    Usual Maximum and Target Heart RatesTables

  • in ventricular fibrillation

  • Ventricular Fibrillation

  • in ventricular tachycardia

  • Ventricular Tachycardia

  • in Wolff-Parkinson-White syndrome

  • Wolff-Parkinson-White (WPW) Syndrome

    Heart block

    Heart Block

    Heartburn

    Symptoms: Chest or Back Pain

  • in children

  • Gastroesophageal Reflux: Symptoms

  • in gastroesophageal reflux

  • Gastroesophageal Reflux (GERD): Symptoms and Complications

  • during pregnancy

  • Physical Changes: Digestive Tract

  • in scleroderma

  • Scleroderma: Prognosis and Treatment

    Heart failure

    Heart Failure
    Heart Failure: Pumping and Filling ProblemsFigures

  • acute

  • Heart Failure: Treatment of Acute Heart Failure

  • after heart attack

  • Acute Coronary Syndromes (Heart Attack; Myocardial Infarction; Unstable Angina): Pumping Problems
    Complications of a Heart AttackSidebar

  • in cardiomyopathy

  • Dilated Cardiomyopathy: Symptoms
    Restrictive Cardiomyopathy: Symptoms

  • diastolic

  • Heart Failure: Types of Heart Failure
    Heart Failure: Pumping and Filling ProblemsFigures
    Heart Failure: Diastolic Dysfunction

  • drugs for

  • Some Drugs Used to Treat Heart FailureTables

  • gallop rhythm in

  • Diagnosis: Medical History and Physical Examination

  • in heart defects

  • Heart Defects

  • in kidney failure

  • Chronic Kidney Failure: Symptoms

  • liver damage in

  • Congestive Hepatomegaly

  • liver enlargement and

  • Congestive Hepatomegaly

  • in mixed connective tissue disease