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Diseases & conditions A-Z List

Diseases & Conditions A-Z List - «H»:

  1. Hemophilia B Hemophilia B
    Hemophilia B is a hereditary bleeding disorder caused by a lack of blood clotting factor IX. Without enough factor IX, the blood cannot clot properly to control bleeding. See also: Coagulation disorder Causes Hemophilia B is caused by an inherited X-linked recessive trait, with the defective gene ...
  2. Hemorrhagic Hemorrhagic
    Hemorrhage is the medical term for bleeding, usually excessive bleeding. Hemorrhagic diseases are caused by, or result in, bleeding (hemorrhaging). See also: Primary thrombocythemia (hemorrhagic thrombocythemia) Stroke Yellow fever Bleeding disorders Ebola fever Dengue hemorrhagic fever ...
  3. Hemorrhagic disease of the newborn Hemorrhagic disease of the newborn
    Hemorrhagic disease of the newborn is a bleeding disorder that usually develops shortly after a baby is born. Causes A lack of vitamin K causes hemorrhagic disease of the newborn. Vitamin K plays an important role in blood clotting. Babies usually have low levels of vitamin K for a variety of reaso...
  4. Hemorrhoid surgery Hemorrhoid surgery
    Hemorrhoid surgery is the removal of swollen veins around the anus (hemorrhoids). Hemorrhoids can be inside or outside of the skin around the rectum. Description Hemorrhoids can be surgically removed using a special stapler or sutures (stiches). You may be sedated and pain-free (local or spinal ane...
  5. Hemorrhoids Hemorrhoids
    Hemorrhoids are painful, swollen veins in the lower portion of the rectum or anus. Causes This condition is very common, especially during pregnancy and after childbirth. Hemorrhoids result from increased pressure in the veins of the anus. The pressure causes the veins to bulge and expand, making t...
  6. Hemothorax Hemothorax
    Hemothorax is a collection of blood in the space between the chest wall and the lung (the pleural cavity). Causes The most common cause of hemothorax is chest trauma. It can also occur in patients who have: A defect of blood clotting Blunt trauma to the chest Death of lung tissue (pulmonary infarc...
  7. Hemovac drain Hemovac drain
    A Hemovac drain was placed under your skin during surgery. This drain removes any blood or other fluids that might build up in this area. You can go home with the drain still in place. Your health care provider will tell you how often you need to empty the drain. Your nurse will show you how to empt...
  8. Henoch-Schonlein purpura Henoch-Schonlein purpura
    Henoch-Schonlein purpura is a disease that involves purple spots on the skin, joint pain, gastrointestinal problems, and glomerulonephritis (a type of kidney disorder). Causes Henoch-Schonlein is caused by an abnormal response of the immune system. It is unclear why this occurs. The syndrome is usu...
  9. Hepatic encephalopathy Hepatic encephalopathy
    Hepatic encephalopathy is a worsening of brain function that occurs when the liver is no longer able to remove toxic substances in the blood. Causes Hepatic encephalopathy is caused by disorders that affect the liver. These include disorders that reduce liver function (such as cirrhosis or hepatit...
  10. Hepatic hemangioma Hepatic hemangioma
    A hepatic hemangioma is a noncancerous liver tumor made of widened (dilated) blood vessels. Causes A hepatic hemangioma is the most common noncancerous tumor of the liver. It is believed to be a birth defect. Hepatic hemangiomas can occur at any time, but are most common in people in their 30s - 50...
  11. Hepatic ischemia Hepatic ischemia
    Hepatic ischemia is a condition in which the liver does not get enough blood or oxygen, causing injury to liver cells. Causes Low blood pressure from any condition can lead to hepatic ischemia. Such conditions may include: Abnormal heart rhythms Dehydration Heart failure Infection Severe blee...
  12. Hepatic vein obstruction (Budd-Chiari) Hepatic vein obstruction (Budd-Chiari)
    Hepatic vein obstruction is a blockage of the hepatic vein, which carries blood away from the liver. Causes Hepatic vein obstruction prevents blood from flowing out of the liver and back to the heart. This blockage can cause liver damage. Obstruction of this vein can be caused by a tumor or growth ...
  13. Hepatitis Hepatitis
    Hepatitis is inflammation of the liver. Causes The disease can be caused by: Infections from viruses (such as hepatitis A, B, or C), bacteria, or parasites Liver damage from alcohol or poisonous mushrooms Medications, such as an overdose of acetaminophen, which can be deadly Immune cells in the bo...
  14. Hepatitis A - vaccine Hepatitis A - vaccine
    The hepatitis A vaccine protects you against a type of liver infection called hepatitis A. The vaccine will not protect you from other types of hepatitis. Information The vaccine, called Havrix or VAQTA, is made from inactivated whole virus of hepatitis A. The inactive virus stimulates your body to...
  15. Hepatitis B Hepatitis B
    Hepatitis B is inflammation (irritation and swelling) of the liver due to the hepatitis B virus (HBV). Other types of hepatitis include: Hepatitis A Hepatitis C Hepatitis D See also: Autoimmune hepatitis Chronic persistent hepatitis Drug-induced hepatitis Causes The hepatitis B virus ...