A to Z
Health Topics
- Haemophilus influenzae type b (Hib) Vaccine
- Haemophilus influenzae type b (Hib) Vaccine: What You Need to Know
- Hair Analysis
- Hair Loss
- Hair Loss From Cancer Treatment
- Hair Transplant Surgery
- Hairy Cell Leukemia Treatment (PDQ®): Treatment - Health Professional Information [NCI]
- Hairy Cell Leukemia Treatment (PDQ®): Treatment - Patient Information [NCI]
- Halcinonide Topical
- Halobetasol Topical
- Haloperidol
- Haloperidol Injection
- Hammer, Claw, and Mallet Toes
- Hand and Foot Dermatitis
- Hand-Foot-and-Mouth Disease
- Hand-Washing
- Handling Sadness and Yearning After a Major Loss
- Hands-Only CPR
- Hantavirus Cardiopulmonary Syndrome (HCPS)
- Harmful Noise Levels
- Hay Fever and Other Seasonal Allergies
- Head Injury, Age 3 and Younger
- Head Injury, Age 4 and Older
- Head Lice
- Headache Clinics
- Headache Prevention: Posture and Body Mechanics
- Headaches
- Headaches
- Headaches: Avoiding Triggers
- Headaches: Keeping a Diary
- Headaches: Managing a Headache
- Healing Through Humor
- Healing Touch
- Health and Safety, Ages 2 to 5 Years
- Health and Safety, Birth to 2 Years
- Health Claims on Food Labels
- Health Problems Associated With Adult Obesity
- Health Risks
- Health Risks Related to Smokeless Tobacco
- Health Screening: Finding Health Problems Early
- Health Tracking Forms and Checklists
- Healthwise Self-Care Checklist: Do I Need to Go to the Doctor?
- Healthwise Symptom Checker
- Healthy Aging
- Healthy Aging: Is It Time to Stop Driving?
- Healthy Attitudes Toward Food and Exercise
- Healthy Eating
- Healthy Eating
- Healthy Eating and Older Adults
- Healthy Eating and Stress
- Healthy Eating Basics: Building Healthy Meals
- Healthy Eating Basics: Cooking
- Healthy Eating for Children
- Healthy Eating in Children: Problems Caused by Poor Nutrition
- Healthy Eating in Children: Things That Influence Food Choices
- Healthy Eating in Social Situations
- Healthy Eating: Changing Your Eating Habits
- Healthy Eating: Cutting Unhealthy Fats From Your Diet
- Healthy Eating: Eating Heart-Healthy Foods
- Healthy Eating: Eating Less Sodium
- Healthy Eating: Getting Back on Track
- Healthy Eating: Getting Support When Changing Your Eating Habits
- Healthy Eating: Helping Your Child Learn Healthy Eating Habits
- Healthy Eating: Make It Work for You
- Healthy Eating: Making Healthy Choices When You Eat Out
- Healthy Eating: Making Healthy Choices When You Shop
- Healthy Eating: Making Meals With Less Sodium
- Healthy Eating: Overcoming Barriers to Change
- Healthy Eating: Recognizing Your Hunger Signals
- Healthy Eating: Starting a Plan for Change
- Healthy Eating: Staying With Your Plan
- Healthy Eating: Taking Calcium and Vitamin D
- Healthy Habits for Kids
- Healthy Habits to Prevent Osteoporosis
- Healthy Muscles
- Healthy Weight: Find Your Inspiration
- Healthy Weight: Make Your Plan
- Healthy Weight: Thought-Tracking Journal
- Healthy Weight: What Works
- Healthy Weight: When Success Slows Down
- Hearing Aids
- Hearing Loss
- Hearing Tests
- Heart and Circulation
- Heart Arrhythmias and Exercise
- Heart Attack
- Heart Attack and Stroke in Women: Reducing Your Risk
- Heart Attack and Stroke Risk Screening
- Heart Attack and Stroke: A Woman's Risk
- Heart Attack and Stroke: Lowering a Woman's Risk
- Heart attack: Fast facts
- Heart Attack: How to Prevent Another One
- Heart Block
- Heart Failure
- Heart Failure and Sexual Activity
- Heart Failure Daily Action Plan
- Heart Failure With Preserved Ejection Fraction (Diastolic Heart Failure)
- Heart Failure With Reduced Ejection Fraction (Systolic Heart Failure)
- Heart Failure: Activity and Exercise
- Heart Failure: Avoiding Medicines That Make Symptoms Worse
- Heart Failure: Being Active
- Heart Failure: Checking Your Weight
- Heart Failure: Checking Your Weight Daily
- Heart Failure: Compensation by the Heart and Body
- Heart failure: Fast facts
- Heart Failure: How Support Can Help
- Heart Failure: Learn to Recognize Symptoms
- Heart Failure: Limiting Fluids
- Heart Failure: Limiting Sodium
- Heart Failure: Living Better by Caring for Yourself
- Heart Failure: Should I Get an Implantable Cardioverter-Defibrillator (ICD)?
- Heart Failure: Support After Your Hospital Stay
- Heart Failure: Taking Medicines
- Heart Failure: Taking Prescription and Over-the-Counter Medicines
- Heart Failure: Tips for Easier Breathing
- Heart Failure: Track Your Weight, Food, and Sodium
- Heart Failure: Watching Your Fluids
- Heart Failure: What Are Daily Symptom Checks?
- Heart Failure: What Is It?
- Heart Failure: When to Act on Your Symptoms
- Heart Failure: Your Reason to Be Active
- Heart Health: Finding Support for Healthy Changes
- Heart Health: Walking for a Healthy Heart
- Heart Health: Where Will You Be in 5 Years?
- Heart Murmur
- Heart Rate Problems: Should I Get a Pacemaker?
- Heart Rhythm Problems and Driving
- Heart Rhythm Problems: Diary of Symptoms
- Heart Rhythm Problems: Should I Get an Implantable Cardioverter-Defibrillator (ICD)?
- Heart Rhythm Problems: Symptoms
- Heart Tests: When Do You Need Them?
- Heart Transplant
- Heart Valve Disease
- Heart Valve Repair or Replacement: Before Your Surgery
- Heart-Healthy Diet
- Heart-Healthy Eating
- Heart-Healthy Eating: Fish and Fish Oil
- Heart-Healthy Lifestyle
- Heartburn
- Heartburn During Pregnancy
- Heartburn: Changing Your Eating Habits
- Heat or Ice for Low Back Pain
- Heat Rash
- Heat Waves
- Heat-Related Illnesses
- Heavy Menstrual Periods
- Heavy Sweating
- Heel Bursitis or Tendon Injury: Preventing Pain
- Heimlich Maneuver for Adults and Children Older Than 1 Year
- Helicobacter Pylori Bacteria
- Helicobacter Pylori Tests
- HELLP Syndrome
- Help for Anger Problems
- Help Your School-Age Child Develop Social Skills
- Help Your Working Teen Balance Responsibilities and Set Priorities
- Helping a Child Overcome Adverse Childhood Experiences (ACEs)
- Helping a Family Member Who Has PTSD
- Helping a Person During a Seizure
- Helping Adolescents Develop More Mature Ways of Thinking
- Helping Children During Immunizations
- Helping Children With Disabilities Stay Active
- Helping Kids Handle Peer Pressure
- Helping Someone During a Panic Attack
- Helping Your Child Avoid Tobacco, Drugs, and Alcohol
- Helping Your Child Build a Healthy Body Image
- Helping Your Child Build Inner Strength
- Helping Your Child Build Self-Esteem
- Helping Your Child Deal With Asthma
- Helping Your Child Manage Their Emotional Reactions
- Helping Your Child Prevent and Manage Seizures
- Helping Your Child Recover After a Traumatic Event
- Helping Your Child Transition Into Middle School or Junior High
- Helping Your Child Who Is Overweight
- Helping Your Newborn Learn
- Helping Your School-Age Child Learn About the Body
- Helping Your Teen Become a Safe Driver
- Helping Your Teen Recover After a Traumatic Event
- Hemochromatosis
- Hemochromatosis Gene (HFE) Test
- Hemochromatosis Genetic Screening
- Hemodialysis
- Hemodialysis Access: When Is the Right Time?
- Hemoglobin Electrophoresis Test
- Hemophilia
- Hemophilia: Preventing Bleeding Episodes
- Hemorrhagic Stroke
- Hemorrhoidectomy
- Hemorrhoidectomy: Before Your Surgery
- Hemorrhoidectomy: Returning Home
- Hemorrhoids
- Henna Tattoos (Mehndi)
- Heparin Injection
- Hepatitis A
- Hepatitis A Vaccine
- Hepatitis A Vaccine: What You Need to Know
- Hepatitis A Virus Test
- Hepatitis B
- Hepatitis B Vaccine
- Hepatitis B Vaccine: What You Need to Know
- Hepatitis B Virus Tests
- Hepatitis B: How to Avoid Spreading the Virus
- Hepatitis B: Postvaccination Test for Immunity
- Hepatitis C
- Hepatitis C in Pregnancy
- Hepatitis C Viral Load Test
- Hepatitis C Virus Tests
- Hepatitis C: Your Risk for Cirrhosis
- Hepatitis D
- Hepatitis E
- Hepatitis Panel
- Here's Help: How to Apply a Topical Cream for Your Child
- Here's Help: How to Give Your Child Eardrops
- Here's Help: How to Give Your Child Eyedrops or Eye Ointment
- Here's Help: How to Give Your Child Oral Medicine
- Here's Help: How to Give Yourself Eyedrops or Eye Ointment
- Here's Help: How to Insert Your Child's Suppository
- Here's Help: How to Use Nasal Spray or Drops for Your Child
- Here's Help: Mild Dehydration in Your Baby or Child
- Here's Help: Mild Head Injury (Bump, Cut, or Scrape) in Children
- Here's Help: Mild Heat Exhaustion in Children
- Here's Help: Mild Sunburn in Children
- Here's Help: Minor Burn in Children
- Here's Help: When Your Newborn Is Sick
- Hereditary Diffuse Gastric Cancer (PDQ®): Genetics - Health Professional Information [NCI]
- Hereditary Kidney Cancer Syndromes (PDQ®): Genetics - Patient Information [NCI]
- Hereditary Leiomyomatosis and Renal Cell Cancer (PDQ®): Genetics - Health Professional Information [NCI]
- Hereditary Papillary Renal Carcinoma (PDQ®): Genetics - Health Professional Information [NCI]
- Herniated Disc Surgery: How Others Decided
- Herniated disc: Fast Facts
- Heroin
- Herpes Tests
- Hiatal Hernia
- Hiccups
- HIDA Scan
- Hidden Gluten
- Hidradenitis Suppurativa
- High Blood Pressure
- High Blood Pressure
- High Blood Pressure During Pregnancy
- High Blood Pressure in Children and Teens
- High Blood Pressure: Checking Your Blood Pressure at Home
- High Blood Pressure: Make the Most of Home Monitoring
- High Blood Pressure: Nutrition Tips
- High Blood Pressure: Over-the-Counter Medicines to Avoid
- High Blood Pressure: Should I Take Medicine?
- High Blood Pressure: Taking Medicines Properly
- High Blood Pressure: The DASH Diet
- High Blood Pressure: Using the DASH Diet
- High Cholesterol
- High Cholesterol: How a Dietitian Can Help
- High Cholesterol: Making Lifestyle Changes
- High Triglycerides
- High-Potassium Foods
- High-Pressure Injection Wounds
- High-Protein Foods for Wound Healing
- High-Risk Pregnancy
- High-Sensitivity C-Reactive Protein (hs-CRP) Test
- Hip Bursitis or Tendon Injury: Preventing Pain
- Hip Fracture
- Hip Fracture Repair (Hip Pinning)
- Hip Fracture Surgery
- Hip Injuries, Age 11 and Younger
- Hip Injuries, Age 12 and Older
- Hip Problems, Age 11 and Younger
- Hip Problems, Age 12 and Older
- Hip Repair Surgery: Returning Home
- Hip Replacement Surgery: How Others Decided
- Hip Replacement Surgery: Returning Home
- Hip Replacement: Before Your Surgery
- Hip Replacement: When Can You Be Active Again?
- Hirschsprung Disease
- Histrelin Implant
- HIV (Human Immunodeficiency Virus) Infection
- HIV and Exercise
- HIV and Fatigue
- HIV and Pregnancy
- HIV Screening
- HIV Treatment in Children
- HIV Viral Load
- HIV Viral Load Test
- HIV: Nonprogressors and HIV-Resistant People
- HIV: Preventing Infections
- HIV: Taking Antiretroviral Medicines
- HIV: Understanding the Test
- Hoarding Disorder
- Hodgkin Lymphoma
- Hodgkin Lymphoma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
- Hodgkin Lymphoma Treatment (PDQ®): Treatment - Patient Information [NCI]
- Home Blood Pressure Log
- Home Blood Pressure Test
- Home Blood Sugar Diary
- Home Blood Sugar Test
- Home Ear Examination
- Home Health Care: What to Expect
- Home Lung Function Test
- Home Pregnancy Tests
- Home Remedies for Bites and Stings
- Home Test for Urinary Tract Infections
- Home Treatment First Aid for Cold Exposure
- Home Treatment for Herniated Disc Pain
- Home Treatment for Second-Degree Burns
- Homeopathy
- Homocysteine
- Homocystinuria
- Hormonal Birth Control: Risk of Blood Clots
- Hormone Inhibin A Test
- Hormone Therapy for Abnormal Uterine Bleeding
- Hormone Therapy for Prostate Cancer (Androgen Deprivation Therapy, or ADT)
- Hormone Treatment for Breast Cancer
- Hormones
- Hospice (PDQ®): Supportive care - Health Professional Information [NCI]
- Hospice Care
- Hospital Discharge Planning
- Hospital Isolation Rooms
- Hospital Isolation Rooms
- Hospital Patient Advocates
- Hospital Policies and Breastfeeding
- Hospital-Acquired Pneumonia (Nosocomial Pneumonia)
- Hot and Cold Therapy for Arthritis
- Hot Flashes and Night Sweats (PDQ®): Supportive care - Health Professional Information [NCI]
- Hot Flashes and Night Sweats (PDQ®): Supportive care - Patient Information [NCI]
- How a Heart Attack Happens
- How ADHD Affects Your Child
- How Adolescent Thinking Develops
- How and When to Give Naloxone
- How Birth Control Methods Prevent Pregnancy
- How Diabetes Causes Blindness
- How Diabetes Causes Foot Problems
- How Others Manage Diabetes
- How Plaque Increases the Risk of a Heart Attack
- How Pregnancy (Conception) Occurs
- How Reading Helps Language Development
- How Secondhand Smoke Affects Your Child
- How the Heart Works
- How to advocate for your health
- How to Build Well-Being
- How to Calm a Crying Baby
- How to Check Your Heart Rate
- How to Do a Hamstring Stretch While Sitting
- How to Do Ankle Pumps
- How to Do Calf Stretches While Sitting
- How to Do Chair Push-Ups
- How to Do Curl-Ups
- How to Do Glute Sets
- How to Do Guided Imagery
- How to Do Heel Raises
- How to Do Heel Slides
- How to Do Mindfulness Meditation
- How to Do Progressive Muscle Relaxation
- How to Do Quad Sets
- How to Do Short-Arc (Terminal) Knee Extensions While Standing
- How to Do Stationary Biking for Knee Rehab
- How to Do Step-Up and Step-Down Exercises
- How to Do Straight-Leg Raises
- How to Do the Bird Dog Exercise
- How to Do the Bridging Exercise
- How to Do the Hamstring Stretch in a Doorway
- How to Do the Hip Abduction Exercise
- How to Do the Hip Flexor Stretch
- How to Do the Knee Flexion Stretch While Sitting
- How to Do the Long-Arc Quad Exercise
- How to Do the Passive Knee Stretch
- How to Do the Pelvic Tilt Exercise
- How to Do the Press-Up Exercise
- How to Do the Short-Arc Quad Exercise
- How to Do the Single Knee-to-Chest Exercise
- How to Do the Single-Leg Balance Exercise
- How to Do the Wall Sit Exercise
- How to Drain Blood From Under a Nail
- How to Eat Healthy When You're Home All The Time
- How to Find Sodium
- How to Get Help During a Mental Health Crisis
- How to Get Moving While in the Hospital
- How to Get Rid of Medicines
- How to Get Up Safely After a Fall
- How to Give a Glucagon Shot
- How to Give a Subcutaneous Injection
- How to Give an Epinephrine Shot to a Child
- How to Give an Intramuscular Injection
- How to Give Yourself an Anticoagulant (Blood Thinner) Shot
- How to Give Yourself an Epinephrine Shot
- How to Hand Express Breast Milk
- How to Help Someone During a Seizure
- How to Help Your Child Prevent a Fall in the Hospital
- How to Overcome Adverse Childhood Experiences (ACEs)
- How to Prevent a Second Heart Attack
- How to Prevent Abusive Head Trauma
- How to Put On Compression Stockings
- How to Stop a Nosebleed
- How to Swaddle Safely
- How to Take Birth Control Pills
- How to Teach Your Child by Example
- How to Track Your Stress
- How to Use a Breast Pump
- How to Use a Nebulizer With a Mask
- How to Use an Incentive Spirometer
- How to Use an Insulin Pen
- How to Use Glucagon Nasal Spray
- How to Wear a Mask to Help Prevent Respiratory Infections
- How to Wear a Sling
- How to Wrap a Sprained Ankle
- How You Can Help Manage Your Child's Pain in the Hospital
- How You Can Help Older Adults Stay Connected
- How Your Mind and Body React to Stress
- HPV (Human Papillomavirus) Vaccine: What You Need to Know
- HPV: Should I Get the Vaccine?
- HPV: Should My Child Get the Vaccine?
- Human Chorionic Gonadotropin (HCG) Test
- Human Immunodeficiency Virus (HIV) Test
- Human Insulin Injection
- Human Papillomavirus (HPV) Test of the Cervix
- Human Papillomavirus (HPV) Vaccine
- Human Papillomavirus (HPV) Vaccine (Cervarix)
- Humor Therapy
- Hunger, Fullness, and Appetite Signals
- Huntington Disease Genetic Test
- Hydralazine
- Hydrazine Sulfate (PDQ®): Integrative, alternative, and complementary therapies - Health Professional Information [NCI]
- Hydrazine Sulfate (PDQ®): Integrative, alternative, and complementary therapies - Patient Information [NCI]
- Hydrocele
- Hydrochlorothiazide
- Hydrocodone
- Hydrocodone Combination Products
- Hydrocortisone
- Hydrocortisone for Itching
- Hydrocortisone Injection
- Hydrocortisone Rectal
- Hydrocortisone Topical
- Hydromorphone
- Hydromorphone Injection
- Hydromorphone Rectal
- Hydronephrosis: Fast Facts
- Hydrotherapy
- Hydroxychloroquine
- Hydroxyurea
- Hydroxyzine
- Hyoscyamine
- Hyperbaric Oxygen Therapy for Carbon Monoxide Poisoning
- Hyperkalemia
- Hyperparathyroidism
- Hypertension (high blood pressure): Fast Facts
- Hypertensive Emergency
- Hyperthyroidism
- Hyperthyroidism: Graves' Ophthalmopathy
- Hypertrophic Cardiomyopathy
- Hypertrophic Cardiomyopathy Types
- Hypertrophic Cardiomyopathy: Risk of Sudden Death
- Hyperventilation
- Hypnosis
- Hypoglycemia (Low Blood Sugar) in People Without Diabetes
- Hypoglycemic Unawareness: Taking Steps to Stay Safe
- Hypokalemia
- Hyponatremia
- Hypopharyngeal Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]
- Hypopharyngeal Cancer Treatment (PDQ®): Treatment - Patient Information [NCI]
- Hypospadias
- Hypothermia and Cold Temperature Exposure
- Hypothyroidism
- Hysterectomy
- Hysterectomy for Abnormal Uterine Bleeding: How Others Decided
- Hysterectomy: Before Your Surgery
- Hysterectomy: Returning Home
- Hysterectomy: Should I Also Have My Ovaries Removed?
- Hysterosalpingogram (HSG)
- Hysteroscopy