Browse our Health Library to learn about treatments, conditions, and how Cedars-Sinai can support your healthcare needs.
Hemifacial microsomia (HFM) is a congenital disorder. This means that your child is born with it. In this condition, one side of your baby’s face is underdeveloped (hemi means half). HFM usually only affects one side of the face. ...
Hemoglobin is the part of red blood cells that carries oxygen to cells, tissues, and organs. Hemoglobin C disease is caused by abnormal hemoglobin.
Hemoglobin E trait is an inherited blood disorder. That means it is passed down through your parent’s genes. It occurs most often in people of Southeast Asian descent. Many people with hemoglobin E trait have no symptoms.
Hemolytic anemia is a disorder in which red blood cells are destroyed faster than they are made. Here's what you need to know.
The hemolytic anemias are a group of disorders in which the red blood cells are destroyed faster than the bone marrow can make them. The term for destruction of red blood cells is hemolysis.
Hemolytic disease of the newborn (HDN) is a blood problem in newborns. It occurs when your baby's red blood cells break down at a fast rate. It’s also called erythroblastosis fetalis.
Hemolytic uremic syndrome (HUS) is a rare condition that can lead to kidney failure. The syndrome harms the small structures and vessels inside the kidneys. HUS causes red blood cells to clog the tiny blood vessels in the kidneys. It may...
Hemophilia is an inherited bleeding disorder. Children with hemophilia can’t stop bleeding because they don’t have enough clotting factor in their blood. Clotting factors are needed for blood to clot. Blood clots to prevent excessive ...
A hemorrhagic stroke occurs when blood from an artery suddenly begins bleeding into the brain. As a result, the part of the body controlled by the damaged area of the brain cannot work properly.
Hemorrhoids are when the veins or blood vessels in and around your anus and lower rectum become swollen and irritated. This happens when there is extra pressure on these veins.
Hemorrhoids and varicose veins might seem to be two different, unrelated problems, but they are actually quite similar. And, many women, especially those in the third trimester of pregnancy, have them.
Henoch-Schönlein purpura (HSP) is a condition that involves swelling (inflammation) of small blood vessels. The swollen blood vessels leak into the skin, joints, intestines, and kidneys.
Hepatitis is an inflammation of the liver in which the tissue dies in patches. The condition can range from minor flu-like symptoms to liver failure. It is caused by viruses or abuse of alcohol or drugs.
Hepatitis A is a liver disease that is easily spread from person to person (highly contagious). Hepatitis is a redness or swelling (inflammation) of the liver that sometimes causes lasting damage. Hepatitis A is one type of hepatitis.
Hepatitis is a redness and swelling (inflammation) of the liver. It sometimes causes permanent liver damage.
Hepatitis C is a liver disease that is caused by the hepatitis C virus. It is a redness and swelling (inflammation) of the liver that sometimes causes lasting damage. The liver isn’t able to work the way it should.
Hepatitis is an inflammation of the liver. It can damage and destroy liver cells.
Hepatoblastoma is a very rare cancer. It’s a tumor that starts in the liver. The cancer cells are similar to fetal liver cells. It usually affects children less than 3 to 4 years of age.
A hepatocellular carcinoma, also known as hepatoma, is a cancer that starts in the liver. It is the most common type of cancer originating in the liver.
Hereditary hemochromatosis is one of the most common genetic disorders in the U.S. Itcauses your body to absorb too much iron from the food you eat.
Hereditary hemorrhagic telangiectasia (Osler-Weber-Rendu syndrome) is a rare genetic disorder that affects the blood vessels in the body. Hereditary hemorrhagic telangiectasia occurs when the arteries are directly connected to the veins,...
If you think of your abdominal wall as an old-fashioned tire with an inner tube, a hernia would be a defect or an opening in the tough outer layer. A similar defect in the abdominal wall allows for the contents of the abdomen to spill ...
Herpangina is a very common illness in children. It causes small blister-like bumps or sores (ulcers) in the mouth.
Herpes eye disease is a group of eye disorders caused by infection with the herpes simplex virus (HSV).
Herpes meningoencephalitis is an infection of the brain and the tissue that covers it with the herpes simplex virus.
Cold sores are small blisters around the mouth caused by the herpes simplex virus. Once a child is infected with the virus, the virus becomes inactive (dormant) for long periods of time. It can then become active at any time and cause ...
Detailed information on mouth infections, including the oral herpes simplex virus infection
In a hiatal hernia, part of your stomach pushes up into an opening (the hiatus) in your diaphragm. The diaphragm is the muscle between your stomach and your chest.
A hiatal hernia happens when part of your stomach pushes up into an opening (hiatus) in your diaphragm. The diaphragm is a muscle between your stomach and your chest. You may not need surgery. But if your case is serious, you will need a...
Hidradenitis suppurativa, or acne inversa, is a condition that causes deep, painful boils or abscesses in your skin.