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Health Library A to Z

H

  • About the Heart and Blood Vessels
  • Detailed anatomical description of the heart's blood vessels, including simple definitions and a labeled, full-color illustration

  • Blood in the Eye (Hyphema)
  • Symptoms of hyphema include blood visible in the eye, usually following some type of trauma. Immediate medical care is necessary.

  • Clubfoot
  • Detailed information on clubfoot, including causes, risk factors, diagnosis, treatment, and cast care

  • Dialysis
  • Detailed information on dialysis, including peritoneal dialysis and hemodialysis

  • Haemophilus Influenzae Type b (Hib)
  • Haemophilus influenzae type b is a serious bacterial disease that usually strikes children younger than 5. It is spread from person-to-person by coughing and sneezing.

  • Have a Hazard-Free Halloween
  • Halloween safety begins at home, with the child's costume. Every part of the costume -- masks, beards, wigs and clothing -- should be made of flame-resistant material.

  • Head Injury in Children
  • The more common causes of head injury in children are falls, motor vehicle accidents—in which the child is either a passenger or a pedestrian—or a result of child abuse.

  • Headaches in Children
  • Many headaches in children may be caused by tight muscles and dilated blood vessels in the head. Other headaches may be caused by an actual problem, such as a tumor or malformation of the brain, although this is much less common.

  • Healthy Diets Overview
  • Eating healthy is an important part of a healthy lifestyle and is something that should be taught to children at a young age.

  • Healthy Sleep Habits
  • The normal amount of sleep varies depending on the age of your child. A 2-year-old needs 10 to 12 hours a night, plus naps during the day. By age 6, a child usually has dropped naps, but still needs 10 hours at night.

  • Hearing Aids for Children
  • Hearing aids can help improve hearing and speech, especially in children with hearing loss in the inner ear caused by damaged hair cells or a damaged hearing nerve.

  • Hearing Loss in Babies
  • Hearing loss in babies is rare in this country, but when it does occur, it's important to diagnose it early. Undetected hearing loss can delay speech and language development.

  • Hearing Loss in Children
  • Sensorineural hearing loss involves the inner ear or its connection with the brain. Conductive hearing loss involves the middle or outer ear.

  • Heart Disorders
  • Detailed information on heart disorders in high-risk newborns

  • Heart Failure in Children
  • Detailed information on congestive heart failure, including causes, symptoms, diagnosis, and treatment

  • Heart Murmurs in Children
  • Your doctor may have told you your child has a heart murmur. While that can sound scary, there are many different kinds of heart murmurs. Some heart murmurs are not even related to heart disease.

  • Heart Transplantation in Children
  • Detailed information on heart transplant, including why a heart transplant is recommended, what is involved in heart transplant surgery, and long-term outlook for a child after a heart transplant

  • Help for a Child with a Cold
  • You want to help a child with cold symptoms feel better, but choosing among countless over-the-counter (OTC) cold medicines can be daunting. Here are some guidelines that can help.

  • Help Your Children Chill Out
  • Kids must cope with all the issues, such as violence or global warming, that stress out adults. But they must also handle stresses added by their parents and the media.

  • Helping Children Conquer Fear
  • Studies indicate that almost all children report having fears. Some of the most common fears are of bugs or ghosts, and studies have shown that kids are afraid of pretty much the same things no matter where they live in the world.

  • Helping Kids Cope with a Divorce
  • Anger, fear, separation anxiety, a sense of abandonment, self-blame, sadness and embarrassment are common reactions to divorce for most children.

  • Helping Teens Embrace Self-Care
  • By involving teens as full participants in their self-care, they're more likely to choose healthy behaviors throughout their lives.

  • Hemifacial Microsomia
  • Detailed information on hemifacial microsomia, including types, causes, diagnosis, and treatment

  • Hemophilia
  • Detailed information on hemophilia, including causes, symptoms, diagnosis, and treatment

  • Hepatitis B (HBV) in Children
  • An infant or young child who contracts hepatitis B is at greater risk of staying infected with the virus and of having life-long liver problems, such as scarring of the liver and liver cancer.

  • Hepatitis in Children
  • Six main types of the hepatitis virus that have been identified: A, B, C, D, E, and G. Vaccination can protect children from several forms of hepatitis.

  • Hepatoblastoma
  • Detailed information on hepatoblastoma, including causes, stages, symptoms, diagnosis, and treatment

  • Herpangina
  • Detailed information on herpangina, including causes, symptoms, diagnosis, and treatment

  • Herpes Zoster (Shingles)
  • Detailed information on shingles, including symptoms, diagnosis, complications, and treatment

  • High-Risk Newborn Blood Disorders
  • Detailed information on blood disorders that place a newborn at higher risk and require clinical care by a physician or other healthcare professional

  • Hirschsprung's Disease
  • Detailed information on Hirschsprung's disease, including risks, symptoms, diagnosis, and treatment

  • HIV Home Care
  • Detailed information on HIV home care for your child

  • Hodgkin Lymphoma
  • Detailed information on Hodgkin's lymphoma, including causes, symptoms, staging, diagnosis, and treatment

  • Home Page - Adolescent Medicine
  • Detailed information on adolescent medicine, including growth and development, cognitive development, relationship development, health and injury problems, and safety

  • Home Page - Burns
  • Detailed information on burns, including anatomy, classification, treatment, and prevention

  • Home Page - Craniofacial Anomalies
  • Detailed information on craniofacial anomalies, including Cleft Lip, Cleft Palate, Craniosynostosis, Deformational Plagiocephaly, Hemifacial Microsomia, Vascular Malformations, and Hemangiomas

  • Home Page - Hematology and Blood Disorders in Children
  • Detailed information on blood disorders, including Anemia, Aplastic Anemia, Hemolytic Anemia, Iron Deficiency Anemia, Megaloblastic Anemia, Sickle Cell Anemia, Thalassemia, Alpha Thalassemia, Beta Thalassemia (Cooley's Anemia)

  • Home Page - Medical Genetics
  • Detailed information on medical genetics, including chromosome abnormalities, single gene defects, multifactorial inheritance, teratogens, and non-traditional inheritance

  • Hospice
  • The goal of hospice care is to provide the terminally ill child peace, comfort, and dignity.

  • How the Liver Works
  • Detailed information on how the liver works, including a full-color, labeled illustration of the digestive system

  • How to Bathe Your Baby
  • As a new parent, you may find "tub time" a bit scary. Here are some suggestions on how to make it less stressful.

  • How to Quit Smoking, Again
  • Fewer than a quarter of those who attempt to quit are able to make it beyond three months before resuming smoking. Women usually find it harder to quit than do men, even though women have a higher risk of smoking-related diseases. The following suggestions can help you kick the habit, again, for good.

  • How to Stop a Crying Baby
  • Some babies cry for long stretches at 3 and 12 weeks of age during steps in development when their sleep is less settled.

  • How to Use a Pacifier
  • It seems everyone has an opinion about pacifiers. That’s because there are both advantages and disadvantages to using them. Get the full facts so you can make the right choice for your baby.

  • Hydrocele
  • Detailed information on hydrocele, including symptoms, diagnosis, and treatment

  • Hydrocephalus
  • Hydrocephalus is a condition in which a buildup of fluid in the brain causes the pressure inside of the head to increase and the skull bones to expand to a larger-than-normal appearance.

  • Hydrops Fetalis
  • This is a life-threatening problem of severe swelling in the fetus and newborn. It develops when too much fluid leaves the bloodstream and goes into the tissues.

  • Hyperthyroidism in Pregnancy
  • Uncontrolled hyperthyroidism has many effects. It may lead to preterm birth and low birthweight. It may also bring on pregnancy-induced high bloo pressure.

  • Hypocalcemia
  • A baby with this condition has too little calcium in the blood. Hypocalcemia is more common in premature and low birthweight babies.

  • Hypoglycemia in Children
  • Causes of hypoglycemia in children with diabetes may include a missed meal, too much medication, or more exercise than usual.

  • Hypospadias
  • Hypospadias is a disorder in newborn boys in which the opening of the urethra is not located at the tip of the penis.

  • Hypothyroidism in Children
  • Hypothyroidism is the condition in which the thyroid is underactive—producing too little thyroid hormone.

  • Management of Hearing Loss
  • A child's hearing loss may be helped with hearing aids or cochlear implants. Training in sign language and lip reading is another option.

  • Patent Ductus Arteriosus (PDA)
  • PDA is a heart problem in which the connection between the aorta and pulmonary artery remains open after birth, instead of closing as it should.

  • Transesophageal Echocardiography
  • Detailed information on transesophageal echocardiography, also called TEE or heart scan with endoscopy, including reasons for the procedure, risks of the procedure, what to expect, and discharge instructions

  • Treatment for Human Bites
  • Human bite wounds are more likely to become infected than dog or cat bites. A doctor should check any human bite that breaks the skin.

  • Types of Hearing Tests for Infants and Children
  • One type of hearing screening test for newborns uses a tiny, flexible plug that is inserted into the baby's ear. The other type of test uses electrodes attached with adhesive to the baby's scalp.

  • Urticaria/Hives in Children
  • Detailed information on urticaria, also called hives, including what food and medicines commonly cause hives

  • Vascular Malformations and Hemangiomas
  • The term “birthmark” may be a misnomer. These usually harmless skin discolorations can appear any time in the first few months after birth. They’re generally nothing to worry about. But, in some cases, they may need treatment. Here are the most common birthmarks and what to do if they show up on your child.