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Glossary

Showing 551-560 out of 1184 Terms

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  • Hemorrhage

    (HEH-muh-rij)

    In medicine, loss of blood from damaged blood vessels. A hemorrhage may be internal or external, and usually involves a lot of bleeding in a short time.

  • Hemorrhagic cystitis

    (HEH-muh-RA-jik sis-TY-tis)

    A condition in which the lining of the bladder becomes inflamed and starts to bleed. The blood can be seen in the urine. Symptoms include pain and a burning feeling while urinating, feeling a need to urinate often, and being unable to control the flow of urine. Hemorrhagic cystitis may be caused by anticancer drugs, radiation therapy, infection, or being exposed to chemicals, such as dyes or insecticides.

  • Hemorrhoids

    (HEH-muh-ROYDS)

    An enlarged or swollen blood vessel, usually located near the anus or the rectum.

  • Heparin

    (HEH-puh-rin)

    A substance that slows the formation of blood clots. Heparin is made by the liver, lungs, and other tissues in the body and can also made in the laboratory. Heparin may be injected into muscle or blood to prevent or break up blood clots. It is a type of anticoagulant.

  • Hepatitis

    (HEH-puh-TY-tis)

    Disease of the liver causing inflammation. Symptoms include an enlarged liver, fever, nausea, vomiting, abdominal pain, and dark urine.

  • Hepatitis B

    (HEH-puh-TY-tis ...)

    A virus that causes hepatitis (inflammation of the liver). It is carried and passed to others through the blood and other body fluids. Different ways the virus is spread include sharing needles with an infected person and being stuck accidentally by a needle contaminated with the virus. Infants born to infected mothers may also become infected with the virus. Although many patients who are infected with hepatitis B virus may not have symptoms, long-term infection may lead to cirrhosis (scarring of the liver) and liver cancer. Also called HBV.

  • Hepatoblastoma

    HEH-puh-toh-bla-STOH-muh

    A type of liver tumor that occurs in infants and children.

  • Hepatocellular carcinoma

    A type of adenocarcinoma and the most common type of liver tumor.

  • Herbal supplement

    (ER-bul SUH-pleh-ment)

    A product made from a plant that is thought to be useful in treating disease or staying healthy. Herbal supplements are taken by mouth.

  • Hereditary

    In medicine, describes the passing of genetic information from parent to child through the genes in sperm and egg cells. Also called inherited.