Medical Definition of Immunoglobulin E. Immunoglobulin E: A class of immunoglobulins that includes the antibodies that are important in an allergic response. Abbreviated IgE. A person who has an allergy often has elevated blood levels of IgE. IgE antibodies attack and engage the invading army of allergens.
Liver failure occurs when large parts of the liver become damaged beyond repair and the liver is no longer able to function. Liver failure is a life-threatening condition that demands urgent medical care. Most often, liver failure occurs gradually and over many years.
Acute liver failure can also be genetic. You can get an abnormal gene from one or both of your parents. If you suffer from a genetic liver disease, you are more susceptible to liver failure. Chronic liver failure is usually a result of cirrhosis or alcohol-related liver disease.