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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 ComaTables

  • dementia with

  • Dementia: Dementia Pugilistica

  • in newborn

  • Birth Injury: Head and Brain Injury

  • in Paget's disease

  • Paget's Disease of Bone: Symptoms

    Headaches

    Headaches
    How Headaches DifferTables

  • after spinal tap

  • Low-Pressure Headache

  • in brain hemorrhage

  • Hemorrhagic Stroke: Symptoms

  • in brain tumor

  • How Headaches DifferTables
    Brain Tumors: Symptoms

  • cluster

  • How Headaches DifferTables
    Cluster Headaches

  • information resources on


  • with medication overuse

  • Tension-Type Headaches: Treatment

  • migraine

  • How Headaches DifferTables
    Migraines
    Drugs Used to Treat MigrainesTables

  • tension-type

  • How Headaches DifferTables
    Tension-Type Headaches

    Head injury

  • in children

  • Skull Fracture: Skull Fractures in Children

    Health care practitioners

  • in care of older people

  • Continuity of Care: Many Practitioners
    Care Providers: Practitioners

  • communication with

  • The Primary Care Doctor
    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 PractitionersTables

  • 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

  • continuity of care and

  • Continuity of Care: Health Care System

  • 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

  • for older people

  • Health Care Coverage for Older People
    Who Pays for What?Tables
    Who Needs Long-Term Care Insurance?Sidebar

    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

  • Effects of Aging on the Ears, Nose, and Throat
    Changes in the Body With Aging: Ears

  • loss of

  • Hearing Loss and Deafness

  • after eardrum perforation

  • Eardrum Perforation: Treatment

  • age-related (presbycusis)

  • Effects of Aging on the Ears, Nose, and Throat

  • 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 Impairment in Children
    Risk Factors for Hearing Impairment 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


  • noise-related

  • Biology of the Ears, Nose, and Throat: 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 Impairment in Children: 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

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

  • anatomy of

  • Biology of the Heart and Blood Vessels
    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 of Heart and Blood Vessel Disorders

  • 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

  • Biology of the Heart and Blood Vessels: Function of the Heart
    A Look Into the HeartFigures

  • during pregnancy

  • Physical Changes During Pregnancy: 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

  • Tests for Heart and Blood Vessel Disorders: Cardiac Catheterization and Coronary Angiography

  • in angioplasty

  • Dilated Cardiomyopathy: Diagnosis

  • in cardiomyopathy

  • Dilated Cardiomyopathy: Diagnosis

  • in pericarditis

  • Chronic Pericarditis: 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 of Heart and Blood Vessel Disorders
    ECG: Reading the WavesFigures
    Holter Monitor: Continuous ECG ReadingsFigures

  • in DiGeorge syndrome

  • DiGeorge Syndrome

  • fainting in

  • Fainting: Problems With the Heart's Pumping

  • information resources on


  • in Kawasaki disease

  • What Is Kawasaki Disease?Sidebar

  • low blood pressure with

  • Low Blood Pressure: Causes
    Fainting

  • oral contraceptive use and

  • Family Planning: Oral Contraceptives

  • over-the-counter drug precautions in

  • Chronic Disorders and Over-the-Counter DrugsTables

  • pericardial

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

  • in pregnancy

  • Heart Disorders During Pregnancy
    Heart Disorders During Pregnancy: Peripartum Cardiomyopathy

  • prevention of

  • Selected Strategies for Preventing Some Major Health ProblemsTables

  • rehabilitation for

  • Rehabilitation for Specific Problems: Heart Disorders

  • sexual activity and

  • Sexual Activity and Heart DiseaseSidebar

  • shock in

  • Shock: Cardiogenic Shock

  • symptoms of

  • Symptoms of Heart and Blood Vessel Disorders
    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

  • Tests for Heart and Blood Vessel Disorders: 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)

  • Biology of the Heart and Blood Vessels: 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: Local Radiation Injury

  • rupture of

  • Complications of a Heart AttackSidebar

  • sarcoidosis of

  • Sarcoidosis: Heart

  • scar tissue of

  • Complications of a Heart AttackSidebar

  • sounds of

  • Biology of the Heart and Blood Vessels

  • 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

  • valves of

  • Biology of the Heart and Blood Vessels
    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
    Staphylococcus aureus Infections: Symptoms
    Streptococcal Infections: Treatment

  • in Marfan syndrome

  • Marfan Syndrome

  • replacement of

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

  • valvuloplasty of

  • Tests for Heart and Blood Vessel Disorders: 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

  • Dyslipidemia: 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

  • Dyslipidemia: Hereditary Dyslipidemias

  • mitral regurgitation with

  • Mitral Regurgitation: Cause

  • oral contraceptives and

  • Family Planning: Disadvantages

  • pericarditis after

  • Acute Pericarditis

  • radionuclide imaging (scanning) after

  • Tests for Heart and Blood Vessel Disorders: Radionuclide Imaging

  • rehabilitation after

  • Rehabilitation for 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)

    Biology of the Heart and Blood Vessels: Regulation of the Heart

  • in atrial fibrillation and flutter

  • Atrial Fibrillation and Atrial Flutter

  • awareness of (palpitations)

  • Palpitations

  • in arrhythmias

  • Abnormal Heart Rhythms: Symptoms

  • in mitral regurgitation

  • Mitral Regurgitation: Symptoms

  • control of

  • Abnormal Heart Rhythms

  • electrocardiogram of

  • see also Electrocardiography
    Tests for Heart and Blood Vessel Disorders: Electrocardiography
    ECG: Reading the WavesFigures

  • fetal

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

  • in heart block

  • Heart Block

  • in heart disease

  • Palpitations
    Diagnosis of Heart and Blood Vessel Disorders

  • 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 During Pregnancy: Heart and Blood Flow
    Physical Changes During Pregnancy: 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 and Diagnosis of Digestive Disorders: Chest or Back Pain

  • in children

  • Gastroesophageal Reflux in Children: Symptoms

  • in gastroesophageal reflux

  • Gastroesophageal Reflux (GERD): Symptoms and Complications

  • during pregnancy

  • Physical Changes During Pregnancy: Digestive Tract

  • in scleroderma

  • Systemic Sclerosis (Scleroderma): 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 of Heart and Blood Vessel Disorders

  • in heart defects

  • Heart Defects

  • in kidney failure

  • Chronic Kidney Failure: Symptoms

  • liver damage in

  • Congestive Hepatomegaly

  • liver enlargement and

  • Congestive Hepatomegaly

  • in Paget's disease of bone

  • Paget's Disease of Bone: Complications

  • pregnancy and

  • Heart Disorders During Pregnancy

  • in rheumatic fever

  • Rheumatic Fever: Heart

  • sexual activity and

  • Sexual Activity and Heart DiseaseSidebar

  • shortness of breath and

  • Dyspnea: Heart Failure

  • systolic

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

  • thrombophilia in

  • Thrombophilia: Causes

  • travel and

  • Specific Medical Conditions and Travel: Heart Disease

  • in vitamin B1 deficiency

  • Thiamin: Wet Beriberi

    Heart rate

    see Heartbeats

    Heartworm

    Other ParasitesTables

    Heat

  • allergy to

  • Physical Allergy

  • disorders from

  • Heat Disorders
    Ways to Help Prevent Heat DisordersSidebar
    Spotlight on AgingSidebar

  • injury from

  • see Burns

    Heat cramps

    Heat Cramps

    Heat exhaustion

    Heat Exhaustion

    Heatstroke

    Heatstroke

    Heat therapy

    Treatment of Pain and Inflammation: Heat Therapy
    Types of Heat TherapyTables

    Heavy chain disease

    Heavy Chain Diseases

    Heavy metals

  • poisoning with

  • Gastroenteritis: Chemical Gastroenteritis

    Heberden's nodes

    Joint Disorders: Symptoms

    Heel

  • bursitis in

  • Inferior Calcaneal Bursitis
    Bursitis in the HeelFigures

  • fractures of

  • Foot and Ankle Fractures: Heel Fractures

  • inflammation of (Sever's disease)

  • Sever's Disease

  • pain in

  • Plantar Fasciosis

  • plantar nerve compression at

  • Medial Plantar Nerve Entrapment

  • spurs of

  • What Is a Heel Spur?Figures
    Plantar Fasciosis: Diagnosis

    Height

  • in adolescent

  • Physical and Sexual Development

  • children's charts for

  • Height and Weight Charts for Boys and GirlsFigures

  • metric equivalents for

  • Equivalents for Height and WeightTables

  • pregnancy and

  • Risk Factors Present Before Pregnancy: Height

  • in preventive care

  • Selected Screening Schedule for AdultsTables

  • short

  • Hypopituitarism: Growth Hormone Deficiency
    Short Stature
    Osteochondrodysplasias

    Heimlich maneuver

    Performing Abdominal ThrustsFigures
    Choking: First-Aid Treatment

    Helicobacter pylori

  • in gastritis

  • Gastritis: Causes
    When the Stomach Is InfectedSidebar

  • indigestion and

  • Symptoms and Diagnosis of Digestive Disorders: Dyspepsia

  • in peptic ulcer

  • When the Stomach Is InfectedSidebar
    Peptic Ulcer
    Peptic Ulcer: Treatment

  • stomach cancer and

  • Stomach Cancer: Causes and Risk Factors

    HELLP syndrome

    Preeclampsia: HELLP Syndrome

    Helper T cells

    Understanding the Immune SystemSidebar
    Acquired Immunity: T Cells

    Hemangioblastoma

    Brain Tumors
    Tumors That Originate in or Near the BrainTables

    Hemangioma

    Hemangiomas of the Liver
    Growths and Malformations of the Vessels: Hemangiomas
    Using Lasers to Treat Skin ProblemsSidebar
    Common Birthmarks and Minor Skin Markings in NewbornsSidebar

  • liver

  • Hemangiomas of the Liver

    Hemapheresis

    Controlling Diseases by Purifying the BloodSidebar

    Hematemesis

    Symptoms and Diagnosis of Digestive Disorders: Bleeding from the Digestive Tract

    Hematochezia

    Symptoms and Diagnosis of Digestive Disorders: Bleeding from the Digestive Tract

    Hematocrit

    Blood Tests*Tables

  • measurement of

  • Complete Blood Count (CBC)Tables

    Hematoma

  • brain (intracranial)

  • How Headaches DifferTables
    Intracranial Hematomas
    Pockets of Blood in the BrainFigures

  • dissecting

  • Aortic Dissection
    Understanding Aortic DissectionFigures

  • ear

  • Injury to the Ear

  • under nail (subungual)

  • Fingernail and Toenail Trauma: Subungual Hematoma

  • spinal

  • Compression of the Spinal Cord: Causes

  • subungual

  • Hand Fractures: Finger Fractures

    Hematometra

    Cervical Stenosis

    Hematopoietic syndrome

    Radiation Injury: Acute Radiation Illness
    Radiation Injury: Treatment

    Hematuria

    Blood in the Urine
    Diagnosis of Kidney and Urinary Tract Disorders: Urinalysis
    Cancers of the Kidney and Urinary Tract: Symptoms
    Bladder Cancer: Diagnosis

  • asymptomatic proteinuria with

  • Glomerulonephritis (Nephritic Syndrome): Asymptomatic Proteinuria and Hematuria Syndrome

  • benign familial

  • Primary Glomerular Disorders That Can Cause GlomerulonephritisTables
    Glomerulonephritis (Nephritic Syndrome): Asymptomatic Proteinuria and Hematuria Syndrome

    Heme

    Iron
    Porphyrias

    Hemianopia

    Visual Pathways and the Consequences of DamageFigures

    Hemiballismus

    Chorea, Athetosis, and Hemiballismus

    Hemifacial spasm

    Hemifacial Spasm

    Hemlock poisoning

    Chemical Food Poisoning: Plant and Shrub Poisoning

    Hemochromatosis

    Iron: Hemochromatosis
    Iron: Treatment

  • information resources on


  • Hemodialysis

    Dialysis
    Reasons for Dialysis in Kidney FailureSidebar
    Possible Complications of HemodialysisTables
    Comparing Hemodialysis With Peritoneal DialysisFigures

  • in hypercalcemia

  • Calcium: Treatment

  • in poisoning

  • Poisoning: Treatment

    Hemoglobin

    Iron
    Components of Blood: Red Blood Cells
    Diagnosis of Blood Disorders: Complete Blood Count
    Blood Tests*Tables

  • abnormalities of

  • Sickle Cell Disease

  • deficiency of

  • see Anemia(s)

  • measurement of

  • Complete Blood Count (CBC)Tables

  • in polycythemia

  • Polycythemia Vera: Diagnosis

  • in urine

  • Changes in the Urine's Color

    HemoglobinA1C

    Diabetes Mellitus (DM): Monitoring Treatment

    Hemoglobin A1C

    Diabetes Mellitus (DM): Diagnosis
    Diabetes Mellitus in Children(DM): Monitoring Treatment

    Hemoglobin C disease

    Hemoglobin C, S-C, and E Diseases

    Hemoglobin E disease

    Hemoglobin C, S-C, and E Diseases

    Hemoglobin S-C disease

    Hemoglobin C, S-C, and E Diseases

    Hemoglobinuria, paroxysmal nocturnal

    More About Some Causes of AnemiaTables

    Hemolytic anemia

    Anemia: Causes
    Common Causes of AnemiaTables
    More About Some Causes of AnemiaTables

  • autoimmune

  • Autoimmune Hemolytic Anemia
    Some Autoimmune DisordersTables

    Hemolytic disease of newborn

    Anemia in the Newborn
    What Is Hemolytic Disease of the Newborn?Sidebar

    Hemolytic reaction, with blood transfusion

    Precautions and Adverse Reactions During Blood Transfusion

    Hemolytic-uremic syndrome

    Hemorrhagic Colitis: Symptoms
    Thrombocytopenia (ITP, TTP): Causes
    Escherichia coli Infections: Symptoms

    Hemoperfusion, charcoal, in poisoning

    Poisoning: Treatment

    Hemophilia

    Hemophilia

  • prenatal testing for

  • Some Genetic Disorders That Can Be Detected Before BirthTables

  • transfusion-related HIV infection in

  • Human Immunodeficiency Virus HIV Infection: Transmission of Infection

    Hemophilus infection

    see Haemophilus infection

    Hemoptysis

    Hemoptysis

  • in mitral stenosis

  • Mitral Stenosis: Symptoms and Diagnosis

    Hemorrhage

    see also Bleeding
    Barriers on the Outside and the Inside

  • cerebral

  • see Stroke

  • retinal

  • altitude sickness and

  • Altitude Illness: Other Symptoms

    Hemorrhagic colitis

    Hemorrhagic Colitis

    Hemorrhagic conjunctivitis

    Enteroviral Infections: Common in ChildhoodSidebar

    Hemorrhagic disease of the newborn

    Vitamin K: Vitamin K Deficiency

    Hemorrhagic fevers

    Hemorrhagic Fevers

    Hemorrhagic telangiectasia, hereditary (Rendu-Osler-Weber disease)

    Hereditary Hemorrhagic Telangiectasia

    Hemorrhoids

    Hemorrhoids
    Banding a HemorrhoidFigures

  • during pregnancy

  • Physical Changes During Pregnancy: Digestive Tract

    Hemostasis

    see also Clotting
    Thalassemias
    Bleeding and Clotting Disorders
    Blood Clots: Plugging the BreaksFigures

  • drug effects on

  • Drugs and Blood Clots: A Complicated RelationshipSidebar

    Hemothorax

    Pleural Effusion: Types of Fluid

    Henoch-Schönlein purpura

    Some Disorders Characterized by VasculitisTables
    Henoch-Schönlein Purpura

    Hen worker's lung

    What Causes Hypersensitivity Pneumonitis?Tables

    Heparin

    Drugs and Blood Clots: A Complicated RelationshipSidebar

  • after surgery

  • Pulmonary Embolism (PE): Anticoagulation

  • in hemodialysis

  • Dialysis: Hemodialysis

  • during pregnancy

  • Some Drugs That Can Cause Problems During PregnancyTables
    Thromboembolic Disorders During Pregnancy: Diagnosis and Treatment

  • in pulmonary embolism

  • Pulmonary Embolism (PE): Anticoagulation

  • in stroke

  • Ischemic Stroke: Antiplatelet Drugs and Anticoagulants

    Hepatic arteries

    View of the Liver and GallbladderFigures
    Liver: Blood Supply of the Liver
    Blood Vessel Disorders of the Liver
    Blood Supply of the LiverFigures

  • occlusive disease of

  • Occlusive Peripheral Arterial Disease: Hepatic and Splenic Arteries
    Occlusive Peripheral Arterial Disease: Hepatic and Splenic Arteries
    Ischemic Hepatitis

    Hepatic coma

    Alcohol: Long-Term Effects

    Hepatic ducts

    Digestive SystemFigures
    Gallbladder and Biliary Tract
    View of the Liver and GallbladderFigures

    Hepatic encephalopathy (coma)

    Hepatic Encephalopathy

    Hepatic veins

    View of the Liver and GallbladderFigures
    Liver: Blood Supply of the Liver
    Blood Supply of the LiverFigures
    Blood Vessel Disorders of the Liver

  • in Budd-Chiari syndrome

  • Budd-Chiari Syndrome

  • in heart failure

  • Congestive Hepatomegaly

  • occlusive disease of

  • Veno-Occlusive Disease of the Liver

    Hepatitis

    Hepatitis
    The Hepatitis VirusesTables

  • acute

  • Acute Viral Hepatitis

  • alcoholic

  • Alcohol's Toll on the LiverSidebar

  • autoimmune

  • Chronic Hepatitis: Symptoms
    Chronic Hepatitis: Autoimmune Hepatitis

  • cancer and

  • Viruses and Cancer: A Link*Tables

  • chronic

  • Chronic Hepatitis

  • granulomatous

  • Hepatic Granulomas: Symptoms

  • immunization for

  • Protecting Children Through VaccinesTables
    Protecting Adults Through VaccinesTables
    Common Vaccinations: Hepatitis A
    Common Vaccinations: Hepatitis B
    Vaccinating Infants and ChildrenFigures
    Vaccines for International Travel*,†,‡Tables

  • ischemic

  • Ischemic Hepatitis

  • liver cancer and

  • Primary Liver Cancers: Hepatoma

  • in newborn

  • Some Infections of NewbornsTables

  • during pregnancy

  • Liver and Gallbladder Disorders During Pregnancy
    Specific Medical Conditions and Travel: Pregnancy

  • sexually transmitted

  • Other Sexually Transmitted Diseases

  • transfusion-acquired

  • Testing Donated Blood for InfectionsSidebar

  • in traveler

  • Medical Problems at the Destination: Sexually Transmitted Infections

  • vaccination against

  • Acute Viral Hepatitis: Prevention

    Hepatoblastoma

    Primary Liver Cancers: Other Primary Liver Cancers

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    Hepatocellular Adenoma

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    Some Possible Medicinal Herb–Drug InteractionsTables

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  • Alternative Medicine for Cancer

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    Hereditary Angioedema: Not an AllergySidebar

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    Hereditary Hemorrhagic Telangiectasia

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    Colorectal Cancer: Hereditary Nonpolyposis Colorectal Carcinoma (HNPCC)

    Hereditary (familial) spastic paraparesis

    Hereditary Spastic Paraparesis

    HER-2neu

    Breast Cancer: Characteristics

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  • Abdominal Wall Hernias

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  • Hernia in Children

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    Understanding Hiatus HerniaFigures

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    Hernia in Children: Inguinal Hernia

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  • A Herniated DiskFigures
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    Low Back and Neck Pain: Pain Due to Compression of a Spinal Nerve Root
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    What Causes Intestinal Strangulation?Figures

  • umbilical

  • Abdominal Wall Hernias: Umbilical Hernia
    Hernia in Children: Umbilical Hernia

    Heroin

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    Enteroviral Infections: Common in ChildhoodSidebar

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    Viral Central Nervous System Infections in Children

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  • Herpes Simplex Keratitis

  • erythema multiforme with

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  • Infection of the Esophagus

  • fingertip (Herpetic whitlow)

  • Hand and Finger Infections: Herpetic Whitlow

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  • Some Infections of NewbornsTables

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  • Infections During Pregnancy

    Herpesviruses

    Viral Infections: Types of Viral Infections

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    Roseola Infantum

    Herpesvirus 8 infection, cancer and

    Viruses and Cancer: A Link*Tables
    Kaposi's Sarcoma

    Herpes zoster (shingles)

    Herpes Simplex Virus Infections: Antiviral Drugs
    Shingles
    What Is Postherpetic Neuralgia?Sidebar

  • cornea

  • Herpes Zoster Ophthalmicus

  • immunization for

  • Common Vaccinations: Herpes Zoster

  • mouth

  • Mouth Sores: Infection

  • pain after

  • Types of Pain: Postherpetic Neuralgia
    What Is Postherpetic Neuralgia?Sidebar

    Herpetic gingivostomatitis

    Herpes Simplex Virus Infections: Oral Infection

    Herpetic whitlow

    Hand and Finger Infections: Herpetic Whitlow

    Hers' disease

    Types and Characteristics of Glycogen Storage DiseasesTables

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    Depression: Drug Therapy
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